Process for processing coke powder for sintering
A processing technology and coke powder technology, which is applied in the field of coke powder processing technology for sintering, can solve problems such as unfavorable sintering production
Inactive Publication Date: 2020-07-14
HUNAN VALIN XIANGTAN IRON & STEEL CO LTD
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
To solve the problem of over-grinding of -5mm particle size coke powder to produce a large amount of -0.5mm particle size coke powder which is not conducive to sintering production
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0020] The process method of the present invention was implemented in 1# sintering machine on November 20, and the coke powder samples of December were taken and compared with the coke powder samples of 1~11 months for data analysis. The amount of powder was effectively reduced (Table 1).
[0021] Table 1 1# sintering machine coke powder -0.5mm particle size
[0022] .
Embodiment 2
[0024] The process of the present invention was carried out in 2# and 3# sintering machines on November 25, and the coke powder samples of December were compared with the coke powder samples of 1~11 months for data analysis, and it was found that the industrial test data of 1# sintering machine were basically the same, - The proportion of 5mm particle size has been effectively reduced (Table 2).
[0025] Table 2 2# sintering machine coke powder -0.5mm particle size
[0026] .
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The invention relates to a process for processing coke powder for sintering. The process comprises the following process steps of S1, before a four-roller crushing process, a set of 5.5 mm standard sieve is additionally arranged, the amount of minus 5mm coke powder under the sieve is 30% to 40%, and the amount of minus 3mm coke powder under the sieve is greater than 70%; S2, 60% to 70% of + 5 mm coke powder on a pre-screening sieve is put into four rollers and then crushed; and S3, the crushed coke powder and minus 5mm coke powder under the sieve are gathered, and conveyed to sintering production for use. According to the process for processing the coke powder for sintering, the technology of crushing the coke powder by the double rollers is modified, and pre-screening the coke powder withthe particle size of minus 5 mm in the raw fuel is carried out, so that the problem of over-crushing in the coke powder crushing process is solved.
Description
technical field [0001] The invention belongs to iron and steel smelting technology, and relates to a coke powder processing technology for sintering. Background technique [0002] The higher the proportion of 0.5mm-3mm coke powder for sintering, the better, and the proportion of -0.5mm coke powder should be reduced as much as possible. In the existing coke powder for sintering, the proportion of -3mm particle size is between 30% and 50%. In order to meet the sintering production, all the coke powder is crushed by four rollers, and then used for sintering. During the production operation, it was found that the proportion of coke powder with a particle size of -0.5mm after four-roll crushing was too high, reaching 27-30%, and the burning speed of coke powder with too fine particle size was too fast, which would increase the consumption of sintering fuel. In order to rationally optimize the particle size composition of the coke powder, a special research was conducted and the ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B02C4/02B02C23/08
CPCB02C4/02B02C23/08
Inventor 赵改革汤伟汤乐云刘方利罗文平苏建军周云花刘胜王路冯敏欺何二喜张永东
Owner HUNAN VALIN XIANGTAN IRON & STEEL CO LTD