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The metallurgical industry produces more than 1 billion tons of various industrial high-temperature wastes every year, and the stock is huge. Most of the waste residue is slag and steel slag produced by steel mills. At present, most of the storage methods for treating slag and steel slag solid waste are naturally stacked. During the stacking process, slag and steel slag are easily weathered into dust, which is alkaline when exposed to water, and the steel slag contains vanadium and titanium, which is easy to cause pollution to the surrounding environment.
Steel slag recycling is both environmentally friendly and economical. The use of slag and steel slag refers to deep processing into a reactive concrete component. A large number of studies have proved that the slag and steel slag can be ground into fine powder with a specific surface area of 400m2kg550m2kg, which can be used as cement mixed material to produce steel slag cement. It can be used as concrete admixture after compounding with ore powder, and even Equally replace part of the cement, reduce the cost of cement, and greatly increase the added value of slag and steel slag products.
In addition, the finer the slag and steel slag powder, the easier it is to release CaOH2 during the hydration process, improve its stability, and improve the liquid alkalinity of the concrete system. It can act as a slag micro-powder alkaline activator. , so that the late strength of concrete is significantly improved. At the same time, the iron contained in the steel waste is also easily collected.
At present, according to national standards and industry standards, the amount of slag and steel slag in cement is between 20 and 50. Calculated by a 1 million tons cement grinding station, it is possible to directly mix about 300,000 tons of slag and steel slag powder without calcination, which can reduce 36,000 tons of standard coal, which can reduce carbon dioxide emissions by 100,000 tons.
The technology of slag and steel slag grinding technology mainly includes roller press ball mill combined grinding, pre-grinding vertical mill ball mill grinding, vertical grinding and grinding. Among them, the vertical grinding and grinding process is simple, the land occupation is small, the civil construction cost is low, the grinding efficiency is high, and the energy consumption is low, which is an ideal slag and steel slag treatment process.
1.Low comprehensive investment. The equipment integrates the functions of crushingdryinggrindingpowder separating and transportation, featuring simple system and compact layout, with the floor space of about 50 of that of the ball mill system. And it can be arranged outdoors so as to greatly reduce the investment costs.
2.Automatic control system. As the roller dose not contact grinding disc directly and the roller and lining board are made of high-quality materials. Therefore, they enjoy longer service life and less wear.
Grinding Mill Manufacturers For Slag. How much to invest a slag superfine powder vertical roller mill . aug 28, 2017 slag vertical roller mill production line is the main equipment mill, micro powder grinding mill and superfine powder vertical roller mill with good quality. be connected with the practical production demand of manufacturers. get price.
4. High-quality finished products. The grinding roller does not directly contact the grinding disc, so the product contains very little iron and the iron contents due to mechanical wear can be easily removed, so that the whiteness and purity of the product can be effectively guaranteed.
5. High environmental protection standard. The system is wholly sealed and works under negative pressure, free of dust spillover and environmentally friendly, with the emission meeting the national standard.
Production IntroductionBlast Furnace Slag Vertical Roller Mill Fricenbspintegrates the functions of fine crushing, grinding, drying, powder nbsp nbspselecting and conveying, with the advantages of high grinding efficiency, strong drying capacity. CHAENG provide EPC- turnkey service including research report, engineering design, manufacture, civil engineer, installation and commissioning and until achieves the designing capacity and production standard.
ZKRM Vertical Roller Mill is mainly used for grinding raw meal, clinker, Ground Granulated Blast Furnace Slag, iron ore, limestone, coal powder, coke powder, coal gangue, fly ash, volcanic ash, gypsum, calcite, pyrophyllite, quartz, clay, sandstone, bauxite and other processing industry related to metal and non-metal mine. Types 1.
Slag Mill Process IntroductionThe material through the feed tube fell into the center of slag grinding plant, and then the materials outwards the surrounding area of grinding plate at centrifugal force, to forms a certain thick layer of materials bed, at the same time material was crushed by number of vertical mill rollers.
The slagslag product applications materials continuous moving to the outer edge of the grinding plate, off the grinding plate materials rising with the hot air which enter from wind ring into the vertical roller mill, through the vertical roller mill shell into the middle of the separator, in this course materials and hot gas got a fully heat exchange, the water quickly evaporates.
Separator controls the finished product output size, greater than the specified size are separated and fall back to the plate, while meet the fineness demands are brought through the separator into the finished product warehouse Slag Grinding Mill.
1. One set of system is enough, low operating costs When the specific surface area of the products reaches 4500cmsup2g, the average grinding capacity of the CHAENGs steel slag vertical mill can reach 90th. But choosing ball mill, there are at least six sets of ball mill systems being required.
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