2013年5月27日星期一

Silicon carbide no medium crushing processing line introduced

With the development and application of new materials, silicon carbide (sic) materials because of their unique nature of engineering ceramics, abrasives, refractories, chemicals, power, and smelting and casting industry has a wide range of uses. Foreign merchants silicon carbide materials, not only its chemical composition has its stringent index requirements, and the physical properties of materials and particle shapes have special requirements, such as the shape of the product to be shaped spherical body, not a "false particles "plot fit exists. Not only its true specific gravity, there are strict requirements, but the bulk density of the material also has strict requirements regulations. Bulk density, particle shape is not good, poor toughness and strength of silicon carbide raw materials, lack of competitiveness in the domestic market.
The current domestic production of silicon carbide processing status of the process
China abrasive industry still do not own a professional processing equipment, mining machinery generally borrow for crushing operations. Currently, refractories commonly used abrasive machining equipment and processes are: jaw crusher crushing - double roller crusher crushing - crushing mill - wheeled dry mill for shaping. These processing equipment, primarily using extrusion crushing and grinding works. Although in a certain range can satisfy the market needs, but low efficiency, large power consumption, particle shape difference, process complexity, difficult to maintain equipment, with a high production cost, a more serious harm broken silicon carbide in the processing process, because silicon carbide high hardness crusher body causing severe wear, so that the product into a mechanical "iron" particularly large, resulting in "iron" pollution, contaminated broken material must be disposed of by pickling "iron" before applying, Not only the high processing costs, large material loss by processing factors affecting the amount of processing and production, but also for the environment can also cause serious harm.
Metallic iron and its oxides, non-metallic materials, a hundred harm harmful elements in silicon carbide materials, also has a very strict limit indicator, ultra indicators on the waste.
Third, seek scientific advanced crushing equipment, in order to change the current "iron contamination" sexual processes.
Analysis of traditional processing crushing process, resulting in "iron" pollution mainly from the milling process "crushing" and wheel grinding machine "shaping" process, Mohs hardness of 13 abrasive machining of silicon carbide, will crusher ball and lining board causing severe wear, the general consumption of iron wear around 2-3 ‰, this material without acid treatment is not available, therefore, based on the general status of the domestic industry, urgently seeking an alternative to conventional crushing equipment no medium crushing equipment, removing impurities from the fundamental "iron" and other hard targets elements for set of crushing and shaping as one of the crushing equipment is the industry's pursuit of goals colleagues over the years to meet the engineering ceramic industry for high-purity silicon carbide requirements. To this end, the author examines the test repeated after a long think: PL vertical impact crusher is fully able to meet without the "iron contamination" and other processing equipment due to pollution caused by its own requirements, and processing of the product particle shape, was authalic shape, bulk density, a change in the traditional processing status quo.
PL vertical impact crusher is a new type of material and material from the impact crusher. It uses "rock stone" principle, the use of the material in the high-speed rotation of the impeller speed, whirl the crusher cavity material itself occurs carom crushing principle, the material almost no contact with the body, greatly reducing the material of the "iron contamination." , processed products such as grain shape is cubic plot, along with coarse crushing, fine crushing and shaping dual role.
Vertical impact crusher traditional uses are: processing broken, bauxite, refractory, slag and soft non-metallic materials. Processing capacity is very large, efficiency is particularly high, but no one dared to be used in the domestic crushing process commonly known as "industrial teeth" of silicon carbide, a reference value can not get involved in the technical data and can learn from the successful experience in corporate leadership support, To be prudent, we are in the overall process production line design finalized before the crusher producers with the assistance of the scene into a total of 80 tons of high quality dense silicon carbide blocks of material were heavy-duty, high-strength industrial test, identification of the machinery The various properties of the device, production capacity, the service life of wear, and the production cost and economic efficiency.
After many years of production practice, the production line is stable, simple structure, high efficiency, high crushing efficiency, with a crushing, broken features, easy to maintain, easy to operate. Overcome the traditional processing equipment, inefficient, badly worn body, maintenance difficulties and shortcomings of high overhead costs and greatly reduce the material of the "iron contamination" phenomenon exists, and finished materials such as particle shape into a cube-shaped or plot, no "false particles "phenomenon, along with the collection" broken "and" plastic "once processing is completed the dual role. Basic realization of the non-media processing purposes.

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