Seek advice on coking coal blending plans?
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Primary coking coal, gas coal, lean coal, coking coke dust, asphalt – what is the optimal ratio for the best results? !
http://bbs.hcbbs.com/thread-379006-1-1.html Take a look; it’s material posted by others, I’m not sure if it will be useful to you.
We are about to start experiments in this area, and we hope more people will answer our questions so that we can get off to a good start
I believe that the coking coal blending scheme can only be determined through tests using small coke ovens (40KG). Tests should first be conducted on experimental coke ovens, followed by actual production on commercial coke ovens; meanwhile, the relationship between these two approaches should be examined in order to provide better guidance for production
1. Conduct coal blending tests based on the local coal resource conditions, such as through small coke ovens, by entrusting other institutions, or based on relevant experience. 2. Build on the above foundation by making optimizations, selecting similar ratios for further testing, and gradually drawing conclusions to improve the results. 3. Due to differences in the degree of coal metamorphism or geological conditions, even coals with similar general parameters cannot produce coke of identical quality; each case must be analyzed on its own.
First, determine what specifications the coke you need to produce should have; then carry out calculations based on the specifications of your raw materials. After that, proceed with verification, trial firing, screening, and testing until the product meets your requirements. :handshake :handshake :handshake :lol
I agree with what was said above. In my unit, there is 43% lean coal, 12% coking coal, and 30.1/3% fat coal – 13 in total
Yes, the coal blending ratio depends on the quality requirements of the coke to be produced. As for conducting experiments using small coke ovens, if such ovens are not available, iron box tests can be used instead; it is essential to accumulate sufficient amount of empirical data
Due to the differences in coal types, the conclusions drawn in many places may not be applicable to this plant; it is necessary to conduct tests using small coke ovens. Others' experiences can only be used as a reference!
Coal blending calculation method: Coal type, proportion, ash content %, volatile matter %, caking index, sulfur content %, Notes. 1: 13% , 10.04, 33.03, 90, 1.68; 2: 10% , 9.63, 36.48, 90, 0.48; 3: 30% , 9.49, 19.93, 75, 0.43; 4: 35% , 10.47, 18.63, 64, 0.52; 5: 12% , 10.02, 18.21, 30, 0.58. Blended coal: 100%, 9.98, 22.63, 69.2, 0.65. Ash content of blended coal = 10.04×0.13 + 9.63×0.10 + 9.49×0.30 + 10.47×0.35 + 10.02×0.12 × 100% = 9.98%. Volatile matter content of blended coal = 33.03×0.13 + 36.48×0.10 + 19.93×0.30 + 18.63×0.35 + 18.21×0.12 × 100% = 22.63%. Caking index of blended coal = 90×0.13 + 90×0.10 + 75×0.30 + 64×0.35 + 30×0.12 × 100% = 69.2. Sulfur content of blended coal = 1.68×0.13 + 0.48×0.10 + 0.43×0.30 + 0.52×0.35 + 0.58×0.12 × 100% = 0.65%