Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - Richard

Pages: [1] 2 3 ... 10
1
cb|Emailogin / Grinding and classification of ultrafine mill
« on: Today at 03:28:52 AM »
In the ore mining factory, grinding operation is falling behind the crushing processing. However, this operation continues crushing processing to ore is an important part of the ore separation. The quality of the grinding product has direct impact on the level of the choosing index. The combination of grinding machine and classifier grinding process is called a ultrafine mill classification process. The grinding process should make its final product size up the following operation needs. Besides, the grinding process should be simple, flexible and has certain adaptability. The main grinding process equipment are ultrafine mill, grate ultrafine mill, wet grinding machine, Raymond mill, autogenously mill, semi-autogenously mill, vibrating screen and spiral classifier, etc.
Material separating
Material separating mainly includes three patterns: heavy election, ultrafine mill, the flotation, and electric separation, pick processing, the chemical separation and microbe mineral processing. According to physical and chemical property of the mineral stone, we choose different ways. The main production equipment are magnetic separator, flotation separator, screw chute, concentrator table, high strength magnetized magnetic separator, etc.
Our company adheres to the modern enterprise's scientific management method. We are best manufacturing and constant innovation. There are more than 10 kinds series of the products , including crusher, sand maker, ore dressing plant, ultrafine mill, dryer, rotary kiln, milling machine, etc. And we provide you dozens types of broken, grinding, dressing and sand making equipment with different specifications. They are widely used in mining, building materials, bridges, coal, chemical industry, metallurgy, refractory materials and other industries.

2
cb|Emailogin / Applications and advantages of ore milling equipment
« on: December 13, 2017, 09:58:22 AM »
The stone impact crusher is widely used for crushing ore in railway, highway, energy, cement, chemical, construction and other industries. Its nesting grain size can be adjusted and crushing specifications are diversified.
ore milling equipment uses new concept crushing technology with innovative design principle, fully meets the crushing of different material specifications and the new technology requirements of more crushing less grinding. This machine not only has large breaking ratio, fine grain size and uniform product, but has low unit power consumption; it has few humidity requirements on the broken materials, suitable for any hard brittle materials; the aircraft design is unique so that maintenance and upkeep costs are greatly reduced.
Advantages of ore milling equipment
1) Simple structure, small size, light weight, large capacity, low production costs, large feed opening, high crushing chamber and strong adaptability to the high hardness materials;
2) Ore is broken along the joint plane, so it has less power consumption and high efficiency;
3) Breaking ratio is large to 40, simplifying the crushing process and reducing the cost of the concentrator equipment;
4) The gap between counter plate board and hammer can be easily adjusted, effectively controlling the discharge size with good particle shape;
5) High chromium plate hammer has strong impact resistance, strong abrasion resistance and large impact force;
6) Keyless connection makes maintenance easy, economical and reliable;
7) Full-featured breaking, high productivity, small mechanical wear, high comprehensive benefits;
8) It has a selective crushing effect, and the particle size of crushed product is relatively uniform, widely used for the construction of the bridge, high-speed roads, docks and airports.

3
cb|Emailogin / Application of ore milling equipment in the cement industry
« on: December 12, 2017, 10:54:33 AM »
With the expansion of the cement industry, ore milling equipment has big development in traction components, delivery value, lifting height and its service life. The traction components of large ore milling equipment mostly adopt belt. It is widely considered that belt has good wear resistance and had favor to increase the lifting speed as high as 3.5 meters per second. The device itself is light and operates smoothly. In domestic marker, there is a kind belt centrifugal ore milling equipment that designed to 0.8 meter bucket width, 1.55 meters per second lifting speed, maximum lifting height 30m and transmission capacity of 200 to 220 tons per hour, which can be applied in closed-circuit powder grinding system to lift materials or cement.
The bucket width of belt ore milling equipment is already 1.25m abroad and its lifting height can reach more than 100 meters. Its transmission capacity reaches 1000 tons per hour. Some countries have succeeded in the design of manufacturing folder steel belt ore milling equipments with the bucket width 1.10 meters, 73 meters lifting height and the ability to transport raw materials up to 320 tons per hour.
Now it trends to replace the pneumatic lifting equipment in the pre-decomposition of raw materials. Because the temperature of transporting materials makes limit application of ore milling equipment, it is widely said that the temperature of materials must be less than 90 degrees Celsius, otherwise the heat-proof belt must be used. The heat-proof temperature of the belt can be up to 300 to 400 degrees Celsius.

4
Since portable crusher plant saves a lot of manpower and its market competition is becoming more and more intense, it will be better for us to get a clear knowledge of the factors affecting the price of portable crusher plant.
When it comes to price, your first thought will be the production cost, and then the market demand as well as technology input and services. The following is a detailed introduction to the several factors affecting portable crusher plant price. I hope it will be of help to all of you.
First, the Cost:
The cost should be the lowest price limit. The sales price must be able to make up for price of development and production process, containing material and labor remuneration.
Second, Market Demand
The relation between supply and demand directly affects the portable crusher plant price fluctuation. When the market supply exceeds demand, the price of raw materials will be a bit low and vice verse.
Third, Technology Input and Services
As the grinding equipment in the new century, portable crusher plant has to strengthen the competitiveness through the application of advanced technology. The investment is a pre-requisite. The performance, quality, reliability and after-sales service also directly affect price of portable crusher plant.

5
cb|Emailogin / Advantages and special features of our ore milling equipment
« on: December 05, 2017, 09:55:14 AM »
Our company is famous for supplying ore dressing production lines composed of various devices like the ore milling equipment. According to the specific requirement, customers can choose from many kinds of ore milling equipments with different surface magnetic intensities such as downstream type, semi-reflux type and reflux-type.
The magnetic system of ore milling equipment is a compound of fine ferrite material and rare earth magnets and the average magnetic induction intensity of the surface of the cylinder is 100~600mT.
The ore milling equipment is suitable for the wet magnetic separation of the materials whose granularity is below 3mm and can also be used for removing iron from the materials such as coal, non-metal ore and building material.
Our flotation separator gets welcome on the market not only because of many advantages of simple structure, big processing capacity, convenient operation and easy maintenance, but also because of its following special features:
1.The coarse separation of the lean iron ore after coarse crushing or medium crushing eliminates the barren rocks such as surrounding rock, improves the taste of the iron ore and eases the load of the next procedure.
2.ore milling equipment can be used in the closed circuit firing work for restoring the hematite, and it can separate the raw ore that are not fully restored and return it for firing again.
3.In the ceramic industry, ore milling equipment can remove the iron mixed in the petuntse and improve the quality of the ceramic product.
4.ore milling equipment can also be used in coal firing, sand making, refractory and other industries that need deironing.

6
In recent years, China's construction industry develops rapidly and has a great demand for cement. Although the amount of building industry is expanding, the economic benefit is rising, technical progress is accelerating, all aspects are also get positive progress, at the same time, there also exist a series of problems. For example, the whole industry has the backward ore milling equipment, large energy consumption, low efficiency, and the different product quality. Therefore, the development trend of the building industry will turn to high quality and efficiency.
The change of mining equipment manufacturer's competition from price war to technology war really provides a strong power for SBM Company. Under the stimulation of fierce competition, the SBM Company continually increases the research investment and timely adjusts the industrial structure. We produce a series of cost-effective ore milling equipment, including the stone production line, sand production line, crushing and ore milling equipment. With these advanced ore milling equipment, it will be easier to enhance the quality of building cement.

7
cb|Emailogin / Notes on the installation of ultrafine mill
« on: December 01, 2017, 09:30:52 AM »
1. The installation site of ultrafine mill is closely related to the crushing machine as different crushing site requires different installation position of the ultrafine mill. Generally speaking, ultrafine mill is installed in the workshop or in the open air.
2. Before installing ultrafine mill, check it according to the container loading list and check whether there is damage on the spare parts during the transportation process and whether the spare parts and the replacement parts are complete.
3. Before the machine leaves the factory, the workers have run it for hours to make sure that every spare part can work normally. Even so, after it is installed in the working site, it is still necessary to completely check whether the lubricating pipes are firmly connected, and add oil again before the test run and special grade Mobil automobile oil should be used.
4. Make the spare parts are connected firmly and reliably. Check if there are foreign matters on the impeller, if there are, timely eliminated them. Check whether the connection of the motor is correct and whether the voltage is normal.
5. Before installing the belt, first start the motor, and the revolving direction should be the same with the marked direction of the ultrafine mill.

8
As for course crushing, better equipment have not been developed to replace traditional ore milling equipment and rotary crusher at present. Currently, we mainly aim at promoting, developing and improving the wear-resistance of crushers by modern technology to achieve the aim of energy saving, high efficiency, and long service life. There are more new types of crushers in the field of fine crushing. All in all, ore milling equipment is used most widely among ore milling equipment, ore milling equipment, ore milling equipment and roller crusher.
The moving jaw is a much larger part of crushers with complex structure, and the structural design of jaw should depend on the force of moving jaws. Under the conditions of meeting the strength and hardness, the lighter of its weight, the better. The moving force analysis of the jaw shows that the maximum crushing force moving jaw bearing on the side, the force is getting smaller and smaller. In order to be in line with the conditions of the force, but also to meet the requirements of light weight, variable thickness can be used to strengthen the tendons. That relies on the ribs thickness of the upper (head). The more down, the greater thickness. That is, change the original rectangular reinforcement rib to trapezoidal ribs, as this would reduce the weight of the movable jaw and to ensure that there is sufficient strength. The moving jaw between the two bearing parts of the wall thickness can be moderated to be thinner, in order to reduce weight.
In addition, the research on the rack and the moving jaw Finite Element Method should be strengthened to optimize the design of the moving jaw and the rack to achieve a high degree of reliability and light weight of the rack and moving jaw. Besides, the crushing chamber, crusher dynamic balance, etc., can make use of a computer-optimized design. In short, modern design methods should be used instead of the conventional design method. Furthermore, due to factors such as welding, casting, heat treatment process will ore milling equipment. So, we should improve the design and manufacturing process level and the use of hydraulic adjustment of the discharge opening and hydraulic insurance gradually so that domestic ore milling equipment can achieve the world-class level.

9
cb|Emailogin / The factors that affect the ore milling equipment quantity
« on: November 29, 2017, 10:10:32 AM »
Flotation machine is mainly used for the sorting of copper, zinc, lead, nickel, gold and other non-ferrous metals as well as the rough flotation and selection of the ferrous metals and non-metallic metals. In the routine use of flotation separator, increasing the ore milling equipment rate within a certain range can greatly improve the production capacity of the flotation machine and improve the flotation index. There are many factors that affect the inflatable amount of flotation machine. The following is the way to adjust the ore milling equipment rate from several aspects.
1.The quality of the pulp has a great impact on the inflated amount and dispersion degree. Under normal circumstances, if the mass fraction of slurry is increased within certain limits, the inflatable volume and the dispersion degree are also increased. But the quality scores can’t be too large, too large inflatable amount will bring the worse result.
2.The feeding amount of the slurry. When the amount of slurry that is fed into the center of the impeller is optimum, the amount of air is maximum. If the feeding amount of the slurry is large within a certain range, the centrifugal force generated when the slurry is thrown out is also large, the vacuum that is formed in the negative pressure zone is high, increasing the ore milling equipment rate. But if the feeding amount of the slurry is excessive, the pulp will block the air tube above the impeller, causing breathing difficulties and reducing the inflated amount.
3.The gap between the impeller and the cover. The size of the gap directly affects the ore milling equipment rate. If the gap is too large, the slurry will roll to the rear side of the blade from the front side of the blade, reducing the degree of vacuum of the rear side of the blade and decreasing the ore milling equipment rate; if the gap is too small, the impeller and the cover plate is prone to occur impact and friction and the inflatable amount declines. It is proved that the appropriate clearance is 6 to 8 mm.
4.The rotational speed of the impeller. Within a certain range, the greater the rotational speed of the impeller is, the greater the amount of ore milling equipment amount will be. But if the speed is too large, the cover of the impeller will get worn quickly, power consumption will increase and slurry surface will be unstable.

10
cb|Emailogin / Ore milling equipment is one of mineral processing equipment
« on: November 14, 2017, 10:23:46 AM »
Overview: ore milling equipment, also named classifier, is one of mineral processing equipment mainly composed of drive unit, spiral body, trough, lifting body, the lower bearing (bearing) and discharging valve, with characteristics of simple structure, reliable performance, convenient operation and so on. Screw separator is the equipment for mechanical classification in virtue of the principle that solid particle with different proportion has different sinking speed in liquids. Spiral classifier can mainly be divided into four types: single spiral, high weir double spirals, immersed single spiral and immersed double spirals.
Working principle: ore milling equipment is in virtue of the principle that solid particles with different proportion have different sinking speed in liquids, therefore, the fine ore grain will be floated and overflowed with the water outflow, while the coarse ore grain will be sank in the tank bottom. The spiral pushes material grinded in grinding machine to the upper part and discharges it.
Application: ore milling equipment is widely used in mineral processing plant by forming closed loop with ball mill to diverse sand mine, or used in gravity concentrators to classify ore and fine clay, or used in metal ore dressing process for particle size grading of pulp, as well as desliming and dehydrating operation in ore washing process.

11
cb|Emailogin / Ultrafine mill refers to the rotary separator
« on: November 10, 2017, 08:06:04 AM »
Ultrafine mill refers to the rotary separator, which is belongs to mining machine used to separate the dust and impurities from sand by the buoyancy effect of water. The agitation of the spiral can achieve the purpose of filter moisture and impurities, lifting and transportation, and stirring during the lifting process, to produce uniform sand without the difference of fine sand and coarse sand.
Characteristics: ultrafine mill has characteristics of long screw body, good sealing system, simple structure, strong processing capacity, easy to maintain, low water and clay in finished sand, etc. Therefore, it is widely used in ore mining industry, mineral processing plant by form closed loop with sand washing machine to diverse sand mine, gravity concentrators to classify ore and fine clay, metal ore dressing process for particle size grading of pulp, as well as de sliming and dehydrating operation in ore washing process.
Working principle: ultrafine mill separates dust and impurities from sand by the principle that materials with different particle size and density has a different velocity in the fluid. Material with fine particle size and small density of has a small and slow velocity, while material with large particle size and high density has a fast sedimentation speed. In addition, the evenly stirring of the spiral slice can achieve the purpose of filter moisture and impurities, lifting and transportation.

12
cb|Emailogin / Mobile quarry plant is one kind of mobile crushing plant
« on: November 09, 2017, 09:35:40 AM »
Mobile quarry plant is one kind of mobile crushing plant, which is a liquid stone crushing process can be regarded as a simple stone production line. Mobile construction station is more suitable for processing and crushing of construction waste in accordance with the requirements of the different raw materials, size and finished materials, especially the small crushing site. The mobile crushing station can be used in rough ore milling equipment, general crushing and fine crushing. On the standpoint of the customer, we make the solution of eliminating barriers of site and environment as the primary solution. To provide customers with high-efficient and low-cost hardware facility can greatly expand the concept of crushing operations.
1. Widely used in mining, coal, garbage and construction waste recycling, earthwork, urban infrastructure, roads or construction sites and other site operations.
2. Construction and demolition industry; crushing after the screening; quarrying industry.
3. River pebbles, rocks (limestone, granite, basalt, diabase, andesite), ore tailings, stone chips and artificial sand.

13
cb|Emailogin / Mining machinery industry is bound to develop rapidly
« on: November 07, 2017, 09:18:21 AM »
The western of China has vast market potential, especially Xinjiang, Inner Mongolia and Yunnan, the three mining bases contains enormous business opportunities. China's western exploitation of mineral resources is impacted by the national policies, economic conditions and other conditions, so crusher and mill equipment take the advantage to enter into the western market.
The general state of the mining industry in western China is small and belongs to the stage of bud development. Western mineral resources are very rich, having considerable room and potential for development, it can be described that western mineral resources is poised to take off. So, portable crusher plant crusher and mill should choose the right market. Various support policies of central China's western region has been implemented and the implementation efforts for the development of the western region is also quite large, this is a favorable political environment, which plays a promoting role whether in the strengthening of western construction and rural infrastructure , or the financial support.
In the next few years, the mining enterprises will compete in the fertile land, the western mineral resources will be reasonably developed and ease the demand for mineral resources in western economic construction. Zenith stone crusher has simple structure and easy maintenance, adding luster to the development of mineral machinery industry in China as well as large-scale development of western region.
Zenith actively seizes the opportunity and take that advantage to further deepen the reform, actively adjusts the industrial structure and product mix, changes the mode of economic growth, and enhances the capability of independent innovation, accelerates the R&D and marketing of high-end mining machinery, mineral processing equipment, crusher equipment and key parts, further improve product quality and enhances service awareness to improve the comprehensive competitiveness of the mining machinery industry.

14
cb|Emailogin / Six classified ways of portable crusher plant
« on: November 03, 2017, 08:33:33 AM »
1.Classification according to the impact
Light, heavy
2.Classification according to the length
(1)Short mill: It is called short mill or portable crusher plant when the L/D is under 2. A common mill with a single chamber is used in coarse grinding or primary grinding. Furthermore, two to three portable crusher plants can be used in tandem.
(2)Medium mill: It can be called medium mill when the L/D is about 3.
(3)Long mill: It is called long mill or tube mill when the L/D id above 4. The inside of the medium mill or long mill is pided into two to four chambers, which is widely used in the cement plant.
3.Classification according to the shape of the grinding medium
(1)portable crusher plant: The grinding mediums are mainly steel balls and steel segment, this type of mill is most commonly used.
(2)Rod mill: The grinding medium put into the mill is the steel bar whose diameter is between 50mm and 110mm. The L/D of the rod mill is generally between 1.5mm and 2mm.
(3)Ball rod mill: This kind of mill usually has two to four chambers, the first chamber is installed cylindrical steel bars as grinding medium, the others are installed with steel balls or steel segment.
The L/D of this mill should be five, the ratio of the length of the bar chamber and the effective diameter of the mill ought to be between 1.2 to 1.5, the bar length is 100mm shorter than the bar chamber beneficial to parallel arrangement and to avoid crossover and disorderly stick.
(4)Gravel grinding mill: The grinding medium inside the mill are gravel, pebbles and ceramic balls. It uses granite and ceramic materials as the liner. It is applied in the production of the white or color cement and ceram.
4.Classification according to discharging methods
(1)Tail discharge type: grinding materials are fed from one end of the mill then discharged from the other end.
(2)Middle discharge type: grinding materials are fed from the two ends and then discharged from the middle. This kind of mill equals to two portable crusher plants used in parallel, which enables equipment to be more compact and simplifies the process.
(3)Head discharge type: According to discharging methods, it can be pided into numerous types like grate mill, overflow discharging mill, peripheral discharging mill as well as wind discharging mill.
5.Classification according to transmission
(1)Center drive mill: The motor drives the mill to rotate by driving the hollow shaft of the mill discharging end through the reducer. The shaft extension of the reducer and the centre line of the mill are in the same straight line.
(2)Edge drive mill: The motor drives the mills cylinder to rotate through driving the big gear fixed in the discharge cylinder by the reducer.
6.Other classifications
According to the craft, it can be pided into dry mill, wet mill, intermittent mill and continuous mill as well. Compared with the intermittent mill, the continuous one is of high yield, the current consumption per unit weight of product is low, the mechanization degree is high and the number of the operators is small. However, the investment cost of the infrastructure is big and the operation and maintenance are complicated. At present, the intermittent mill is rarely used but often applied in lab test grinding.

15
cb|Emailogin / The needs and development of construction waste crusher
« on: November 02, 2017, 07:14:42 AM »
The needs and development of construction waste crusher in China heavily depends on the state investment in fixed assets. Since the reform and opening up, Chinas fixed asset investment has got rapid growth, which has driven the boom of investment in construction waste crusher industry. In recent years, China has taken measures to control the investment in fixed assets, but it doesn’t have big influence on the construction waste crusher. The investment in construction waste crusher industry is increasing continuously. In2002-2009, the fixed assets in construction waste crusher have kept steady growth, which has shown that the returns on capital in construction waste crusher industry are higher than the social average assets. So the construction waste crusher is worth the investment.
From the current situation of domestic construction waste crusher market, the foreign capital has stepped up its investment in China. The world largest engineering machinery manufacturer Caterpillar Inc has announced that it plans to invest $10 billion in Chinas engineering machinery market. Domestic enterprises are facing severs challenges.
The document formulated by the state to promote industrial structure optimization and upgrading in the 12th five year plan stressed the need to improve the level of domestic production of major technical equipment. The countries will strengthen the policies to support the high-efficiency and clear power generation and transmission, large-scale petrochemical, transportation equipment, high-level CNC machine tools, automation control, integrated circuits, and advanced power devices industry. It can be inferred that the market will be further concentrated to large enterprises with the development of future construction waste crusher and the deepen competition in the jaw crusher and other industries. The strong will get stronger and the weak will get weaker. The domestic enterprises need to relay on their own forces to compete with multinational companies.

Pages: [1] 2 3 ... 10