Crushing process
Thread Content
Our company’s coking plant uses a two-stage crushing process: there is primary crushing before the coal storage area, with the requirement that 85% of the coal particles be smaller than 3 mm; after the coal is mixed, secondary crushing takes place, with the requirement that 87–92% of the particles be smaller than 3 mm. Please have an expert determine whether secondary crushing is needed If necessary, does all individual coal types (coking coal, 1/3 coking coal, fat coal, lean coal, long-flame coal) need to be crushed?
It depends on your manufacturing process; you can go into details so that everyone can discuss it
Our coking plant uses TJL4350F rammed coking ovens, and the coking coals employed are JM, 1/3JM, FM, SM, and CY; the particle size requirements are as specified above, with the moisture content of the coal entering the oven being 9–11%. Now each type of coal is being crushed, and there are intermittent increases in current; it’s difficult to push the coke along. Nothing has been adjusted, but it should get better after a day. Has there been any separation of the coal during transportation?
Generally, the process used for producing rammed coke involves pre-crushing, mixing, and then crushing. The pre-crushing step involves selective crushing; lean coal, bituminous coal, and 1/3 coking coal all need to be pre-crushed, and I believe long-flame coal also requires pre-crushing!
The preliminary pre-crushing is a selective crushing process; lean coal, gas coal, and 1/3 coking coal require pre-crushing. I believe long-flame coal also needs to be pre-crushed!
After pre-crushing, followed by coal blending and then secondary crushing, there should be no issue with large fluctuations in current flow. Also, 85% of the material needs to reach a size of less than or equal to 3 mm; secondary crushing is still required. I’m not sure about this