Xinxiang Great Wall Machinery

Zhengzhou, United States

GRMC coalvertical roller millproduced byCHAENGadopts a special structure design and production technology, and the quality is up to the leading level in China. It is the first choice equipment for grinding raw coal and bituminous coal.

1. The raw coal is screened from the raw coal storage yard and then dropped onto the belt conveyor through the grid screen. After the iron is removed by the electromagnetic iron separator, the belt conveyor sends the raw coal into the original coal bin for storage.

2. After the pulverizing system has been started, open the rod valve at the bottom of the original coal bin, and start the sealed measuring adhesive taped coal feeder, and then the raw coal enters into the coal vertical mill for drying and grinding.

3. The hot air from the hot stove or waste gas of cement production line are exhausted into coal vertical mill by fans, exchange heat with raw coal in mill, and then take pulverized coal up to separator for separating. Substandard coarse pulverized coal falls down to grinding table for regrinding, and qualified pulverized coal enters into pulse dust collector of explosion proof air box along with gas flow, and is discharged into pulverized coal bin through a grid wheel.

4. Impurities in raw coal, such as parts of coal gangue, metal blocks, etc., are discharged out of the mill through the wind ring and slag discharge port.

CHAENG can undertake EPC turnkey services for slag(Slag product applications) / steel slag / nickel slag / manganese slag powder production line with an annual output of 200, 000-1, 500, 000 tons.

So far, CHAENG has established successfully more than 100 slag production lines in the world.

Over the past decade, it shows that the general trend of cement industry in Germany and Switzerland, which are strong power in world cement industry, is that the traditional portland cement is replaced by the type II cement which is added into large amounts of slag, fly ash, sintered shale, volcanic ash, limestone and relatively less clinker.

GGBFS is a kind of concrete admixture with superior performance. Adding GGBFS during cement production can increase the strength 28D of cement by 15% - 20%, to admix 42.5 grade cement, and during concrete production, slag powder can replace 10 50% of the cement, to mix C20 C60 concrete, which has become an important measure to reduce the cost of cement in the international cement industry.