Technique for procuring desulfurization type water-solubility instant coal powder
A production process and water-soluble technology, applied in the field of desulfurization dry-process coal-water slurry production process, can solve the problems of increased storage difficulty, poor slurry performance, and difficulty in obtaining high-quality, high-concentration coal-water slurry, etc. , to achieve the effects of simplified packaging and transportation, good stability and significant desulfurization effect
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Embodiment 1
[0021] 820kg of raw coal is crushed to less than 30mm by a drum crusher, 22kg of desulfurizer is added, and it is pulverized by three pendulum mills respectively. Among them, a pulverizer controls the particle size distribution of coal powder from 500 μm to 100 μm, b pulverizer controls the particle size distribution of coal powder from 200 μm to 50 μm, and c pulverizer controls the particle size distribution of coal powder from 100 μm to 30 μm. The product is collected through wind separation pipelines, and the pulverized coal particles below 75μm account for more than 75%, and the pulverized coal particles account for 25%-5% of 300μm-75μm, so that the pulverized coal has the highest accumulation efficiency. Then add 6.5kg of additive A and mix evenly to obtain the initial product of the present invention—desulfurization type water-soluble instant coal powder. The pulverized coal is made into 8cm×16cm×32cm, which has a certain mechanical strength, and is not easily broken whe...
Embodiment 2
[0023] Raw coal with ash content of 32% is 1700kg, and the moisture content is controlled below 5%. After being crushed by a drum crusher, the coal is dry-separated by an air-heavy medium fluidized bed, and then the clean coal after deashing is added with a desulfurizer: 14kg. Add additive A: 11kg in proportion to all or part to none, and use a bowl mill and a pendulum mill to control the particle size distribution of coal powder below 75 μm and above 75 μm respectively to obtain coal powder below 75 μm Accounting for more than 75%, 300μm-75μm accounting for 25%-5%, coal powder has the highest accumulation efficiency, namely the desulfurization type water-soluble instant coal powder of the present invention. Then the powder is made into a spherical shape with a certain mechanical strength and a diameter of 3mm-80mm. The spherical desulfurization-type water-soluble instant coal powder is added to a certain proportion of water, disintegrated rapidly, stirred and sheared to form ...
Embodiment 3
[0025] Raw coal with ash content of 28% is 2300kg, and the moisture content is controlled below 6%. After being crushed by the jaw crusher, the low-ash clean coal is combined with two pendulum mills to prepare powder through air selection, and the coarse and fine coal are controlled separately. According to the particle size distribution and mass fraction of powder, the result of combined coal powder is obtained: particles below 75 μm account for more than 75%, 300 μm-75 μm account for 25%-5%, coal powder has the highest accumulation efficiency, add desulfurizer: 21kg , Additive B: 19kg Stir evenly to obtain the desulfurization type water-soluble instant coal powder of the present invention, and make the powder into a 10cm×20cm×40cm square with a certain mechanical strength. Add the massive desulfurization-type water-soluble instant coal powder to a certain proportion of water, disintegrate rapidly, and form a slurry after stirring and shearing, with a concentration of 65%-70% ...
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