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Red mud-containing briquette and preparation method thereof
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A red mud and briquette technology, applied in the field of clean coal, can solve the problems of large land occupation and environmental pollution, and achieve the effects of reducing cultivated land occupation, low volatile matter, and realizing recycling
Inactive Publication Date: 2019-11-26
HENAN CHANGXING IND CO LTD
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Problems solved by technology
At present, the comprehensive utilization rate of red mud in my country is only 4%, and with the continuous increase of alumina production, it not only occupies a large amount of land, but also pollutes the environment.
Method used
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Embodiment 1
[0033] Take 65 parts of mixed coal, add 5 parts of sintering red mud or Bayer red mud, 2 parts of gelatinized starch, and 21 parts of 90°C water, and mix evenly.
[0034] The red mud is soaked in the dispersant solution before being mixed in.
[0035] The coal includes 5 parts of 4-2mm, 30 parts of 2-0.25mm and 30 parts of ≤0.25mm graded coal powder or coal slime.
[0036] After the mold is pressed, let it dry naturally.
Embodiment 2
[0038] Take 65 parts of mixed coal, add 6 parts of sintering red mud or Bayer red mud, 2 parts of gelatinized starch, and 21 parts of 90°C water, and mix evenly.
[0039] The red mud is soaked in the dispersant solution before being mixed in.
[0040] The coal includes 5 parts of 4-2mm, 30 parts of 2-0.25mm and 30 parts of ≤0.25mm graded coal powder or coal slime.
[0041] After the mold is pressed, let it dry naturally.
Embodiment 3
[0043] Take 65 parts of mixed coal, add 7 parts of sintering red mud or Bayer red mud, 2 parts of gelatinized starch, and 21 parts of 90°C water, and mix evenly.
[0044] The red mud is soaked in the dispersant solution before being mixed in.
[0045] The coal includes 5 parts of 4-2mm, 30 parts of 2-0.25mm and 30 parts of ≤0.25mm graded coal powder or coal slime.
[0046] After the mold is pressed, let it dry naturally.
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Abstract
The invention provides a red mud-containing briquette and a preparation method thereof. The red mud-containing briquette comprises, by weight, 60-70 parts of coal, 5-9 parts of red mud, 1-5 parts of adispersant and 2-5 parts of gelatinized starch, the dispersant is a naphthalene dispersant, and the coal is semi-coke or anthracite. The energy-saving, emission-reducing and environmentally-friendlybriquette is prepared by using pulverized coal as a main body and the red mud as a sulfur fixing agent and adding other substances such as a binding agent and the like, so the problem of red mud utilization can be solved, the problem of environmental pollution caused by the red mud and fire coal can also be solved, and the effect of treating wastes with wastes is achieved.
Description
technical field [0001] The invention relates to the technical field of clean coal, in particular to a briquette coal added with red mud and a preparation method thereof. Background technique [0002] Formed coal refers to processing one or several types of coal powder in the presence of a certain proportion of additives (binder, combustion improver and sulfur-fixing agent) according to certain particle size requirements, and under certain pressure, to process it into a Coal products with certain shape and physical and chemical properties. my country is a country where coal is the main energy source. Coal accounts for more than 75% of the total primary energy consumption, and more than 80% is used for direct combustion. The burning of environmental protection measures will cause environmental problems such as smog and acid rain. Therefore, it is more feasible to use front-end control measures to achieve emission reduction. The current status of energy consumption determines...
Claims
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Application Information
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