Change in coal blending ratio
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Let’s discuss under what circumstances coking plants generally change their coal blending ratios I know that a certain type of coal has run out, and it’s necessary to change the coal mixture ratio ； The purchasing department has acquired coal from a new source, so the ratio needs to be adjusted. Are there any other situations in which the ratio would need to be changed? I have a coke oven engineer here; when he isn’t around, the recipe remains unchanged and production continues as usual. But when he is present, the recipe is changed every day, sometimes even two or three times a day. Who can know why these changes are made so frequently?
Nonsense, if you don’t change, won’t you get fired?
Even if it’s just about adjusting the coal ratio, there’s no need to make changes twice or three times in a single day, right?
Failing to make changes does not reflect his skill level. The company manager thought this guy was great – he kept working on improvements every day. Companies appreciate such people; they keep making changes. Keep working hard on it, and he will adjust the proportions of the coal used accordingly. And then there’s just playing around with research. See if the theory matches what I calculated. It’s actually simple; you go to the laboratory to have a lithological analysis done, and with some practice you’ll learn how to do it.
He changed it 3 times at night; the boss saw that this guy was still thinking about work at night, which is worthy of praise – he has a bright future ahead. Wang Shaobo, I and you should learn from him!*
The specifications for coal entering the plant may vary each time, and a change in the specifications of a single type of coal can lead to changes in the specifications of coke. Considering economic factors and indicators, minor adjustments to the coal blending ratio may be necessary. You can learn about the indicators for your individual coal and coke types below. That way, it’s clear why it was changed.
While the inventory of a single type of coal is one factor to consider, the ratio of coal types is mainly adjusted in accordance with the stable operation of the blast furnace. Currently, there are also environmental concerns: when chimney emissions do not meet the standards or when the desulfurization efficiency of the desulfurization system declines, it is necessary to adjust the sulfur content of the coals used as well.
Sometimes, changes in the proportions are also made according to order requirements, so it cannot be generalized. Coke production must keep a close eye on the market; coke is manufactured based on what the market demands, and adjusting the composition is done to meet these requirements.
Changing the coal ratio is not done arbitrarily: 1. When a certain type of coal runs out, it needs to be replaced; 2. It relates to the quality of coke: data such as A, V, S, M40, M10, CRI, CSR, etc.; 3. Others
Productivity requires a continuous and stable operation; when the coal blending ratio is changed, an explanation must be provided.
I’ve already mentioned that when he wasn’t there, the mixture ratio remained unchanged and production continued as usual; but when he was there, the ratio had to be changed every day… Even when he changed the ratio, the chimney would sometimes still emit smoke