At present, the quartz related industry is booming. The process and equipment of quartz mineral processing are also the focus of all practitioners. Today, Xiaobian will take you to understand the relevant knowledge in detail. Quartz is a kind of non-metallic mineral raw material whose main component is silica. It is widely used in construction industry, glass manufacturing, ceramic industry and casting industry. Its application is very wide and there is more demand. But most quartz ore has some impurities, after purification and impurity removal, can be used. At present, there is a large demand for high purity quartz sand on the market, and the high purity quartz sand produced by purification has a good commercial prospect. The purification methods of quartz sand are mainly divided into physical methods and chemical methods. The impurity removal methods can be determined according to the presence of impurities.
At present, the impurities removal methods of quartz sand mainly include crushing method, desliming method, magnetic separation method, flotation method, pickling method, water washing method, gravity separation method and so on. These methods can effectively remove all kinds of impurities in quartz raw ore. Next, Xiaobian will introduce the process and equipment of quartz beneficiation.
1. Crushing method
Pulverization is a method of mechanical pulverization of minerals. After pulverization, the particle size of minerals is reduced, which is easy to separate impurities.
Equipment: Shanlu quartz sand rod mill
Shanlu quartz sand bar mill
Advantages of Shanlu quartz sand rod mill: Shanlu quartz sand rod mill is easy to maintenance, rapid ore discharge; The particle size of the product is uniform, and the phenomenon of over comminution is less. The configuration of Shanlu mill is simple and the use cost is low.
In the processing of high hardness of non-metallic ore, especially quartz ore, mountain robust mill can be widely used.
2. Desliming method
The desilting process uses the friction between the machine and the quartz sand to remove the muddy impurities, and then refines the quartz sand through further classification operations. This can remove weathered clay from quartz sands, but also remove fine minerals less than 0.1mm, in addition to significantly reducing iron content.
Equipment: roller screen, Shanlu SF hydraulic classifier, mud hopper
SAN Lu SF hydraulic classifier
Shanlu SF hydraulic classifier is mainly used for fine classification of mineral particles and mineral separation of different specific gravity. SAN Lu SF hydraulic classifier advantages are: high production efficiency, low energy consumption. Equipped with automatic control system, the adjustment of operation parameters is simple, convenient, easy to control. The water flow is uniform and stable. When the water is stopped, the rising water hole is automatically closed. The material in the cylinder body will not block the water hole and enter the water tank.
3. Magnetic separation method
Magnetic separation is the separation of useless iron-containing impurities from quartz raw materials to improve the purity of quartz sand, or remove iron items protection equipment. The advantage of this method is that it is highly selective and can achieve a high yield of quartz sand while maintaining effective removal of impurity minerals.
Equipment: magnetic separator, Shanlu permanent wet plate magnetic separator, high intensity magnetic separator
Shan Lu wet permanent magnet plate magnetic separator
Shanlu wet magnetic plate separator is the latest research and development of Shanlu Heavy Industry high gradient, high field intensity magnetic separation equipment. Shanlu permanent wet plate magnetic separator advantages are high magnetic field intensity, surface magnetic field intensity can reach 5000-15000GS
; Compared with other permanent magnet separator magnetic field sweep area, magnetic separation effect is better; Compared with other high gradient electromagnetic separator energy saving, power saving, simple structure, reasonable, easy to use, low maintenance rate.
4. Pickling
Pickling method is a means of purifying quartz according to the different dissolution ability of quartz and acid solution, which can effectively remove iron and oxide in quartz.
The commonly used acids in quartz sand pickling include sulfuric acid, hydrochloric acid, nitric acid, hydrofluoric acid and so on.
Scheme: Pickling scheme of Shanlu Heavy Industry
Pickling program of Shanlu Heavy Industry
The pickling scheme of Shanlu Heavy Industry is mainly used for the treatment of quartz oxide skin, and the iron removal and purification of quartz sand, feldspar and other particles. The main process is that raw ore is transported to the upper feed port of pickling reactor by belt conveyor. The reactor is made of special material that is resistant to acid and heat, and is filled with heated acid solution. After the ore reacts with the acid solution in the reactor for a period of time, the acid solution is discharged to the acid circulation tank, and then the reactor is soaked with clean water. The deacidified ore is discharged from the discharge port at the lower part of the reactor and is directly sent to the finished product warehouse for stacking.
5. Wash
Under the condition of high quality quartz sand can enter the water washing process, can remove the dust and some impurities in the sand.
Equipment: Sanlu DTS series vibrating dewatering screen
Sanlu DTS Series Vibration dehydration
Shanlu DTS series vibrating dewatering screen changes the water tension on the surface of the pulp through the vibration force, the pulp water becomes the material under the screen through the screen, and the fine material is blocked by the screen to form the filter layer affected by the vibration force forward motion discharge. Dehydration screen is mainly used in mineral processing industry tailings dehydration, coal preparation plant coal slime dehydration, washed quartz sand dehydration and ceramic mud dehydration, as well as power, sugar, salt and other industrial sectors for medium and fine particle materials wet and dry classification, dehydration, deintermediation and desliming.
6. Recasting method
Gravity separation method is the use of mineral particles with different gravity in the same medium movement, by gravity, medium resistance and other effects of loose, to achieve the purpose of mineral separation. Gravity separation is the preferred method because of its simple operation and low cost. In addition, gravity separation can also remove iron impurities in quartz sand.
Equipment: Shanlu spiral chute
Sanlu spiral chute
Shanlu spiral chute is suitable for the separation of 0.3- 0.02 mm fine material of non-metallic ore objects. Working principle of Shanlu spiral chute: The sand pump will be sent to the top of the spiral two feed port, add supplementary water, adjust the concentration of pulp, pulp from the high natural whirlpool, in the rotation of the inclined surface flow rate to produce a kind of inertial centrifugal force, to the specific gravity of sand, particle size, shape difference, through the effect of gravity and centrifugal force, the ore and sand separate, concentrate into the concentrate bucket pipe, tailings flow into the tailings The pipe is connected to the sand tank, and then the sand pump is used to remove it, which completes the whole process of mineral processing. Shanlu spiral chute has the advantages of stable sorting process, easy to control, allowing a wide range of ore concentration change, high enrichment ratio, high recovery, small area, less water consumption, simple structure, no power, large processing capacity, easy installation, convenient operation, small investment and quick effect.
The above is several common quartz sand beneficiation process introduced by Shanlu Heavy Industry Xiaobian, the specific use of which process method for beneficiation, but also according to the specific situation of quartz sand lode, geographical location conditions and cost, labor and technology and other factors to determine. Only scientific ore beneficiation test, through the test report to determine the beneficiation process, matching suitable beneficiation equipment, in order to obtain high-quality quartz sand products, bring good economic and social benefits. If you need more knowledge about quartz sand dressing, please contact us.Manager Zhang：135-8377-6655。