Uniform sampling detection method for high-aluminum powder production
A sampling detection, high aluminum powder technology, applied in the direction of chemical instruments and methods, aluminum compounds, measuring devices, etc., can solve the problems of increased production costs, refining failure, economic losses, etc., to reduce the input of manpower and material resources, and reduce equipment costs And operation difficulty, small sampling effect
Pending Publication Date: 2020-08-18
谷城宏业耐火材料有限公司
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Problems solved by technology
[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a uniform sampling detection method for the production of high-alumina powder, which solves the problem that the traditional fly ash is directly refined without sampling detection, which easily leads to extraction failure and increases production costs and belts. serious economic loss
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Embodiment Construction
[0031] The technical solution of this patent will be described in further detail below in conjunction with specific embodiments.
[0032] The invention provides a technical solution: a uniform sampling detection method for the production of high-alumina powder, comprising the following steps:
[0033] S1. Weigh and measure several samples from high-alumina fly ash raw materials in different positions, and label the samples with serial numbers, mix the samples one by one with sodium hydroxide solution, heat them, and then import them into the container for pre-desilication reaction. After the pre-desilication reaction, solid-liquid separation is carried out to obtain fly ash filter cake and desiliconization liquid.
[0034] S2. Adding the fly ash filter cake to the slurry made of sodium carbonate, limestone or quicklime to obtain a mixed slurry, and mossing the mixed slurry to form a slurry.
[0035] S3. Roast the slurry to clinker, then mix the clinker with the adjustment sol...
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The invention discloses a uniform sampling detection method for high-aluminum powder production and belongs to the technical field of high-aluminum powder sampling detection. The method comprises thefollowing steps: refining aluminum oxide from sampled high-aluminum pulverized coal; comparing the content of aluminum oxide extracted from a plurality of samples; according to the method, the aluminide which can be extracted from the high-alumina fly ash can be roughly obtained through comprehensive calculation, so that the high-alumina powder produced from the high-alumina fly ash can be calculated in advance, the high-alumina fly ash can be reasonably evaluated when the high-alumina powder is produced, the production cost is prevented from being too high, and the loss probability is reduced. According to the present invention, the obtained sodium aluminate crude liquid is subjected to carbon separation after the clinker is dissolved out, and then the low temperature Bayer process dissolution is performed, such that the lengthy first-stage and second-stage desilicication process is overcome, the difficult-to-operate equipment such as the high pressure desilicication tank, the deep desilicication tank and the like is reduced, the equipment cost and the operation difficulty are reduced, and the high purity alumina product can be obtained.
Description
technical field [0001] The invention belongs to the technical field of high-aluminum powder sampling detection, and in particular relates to a uniform sampling detection method for high-alumina powder production. Background technique [0002] my country is a large coal-producing country, and coal is used as the basic fuel for electric power production. With the steady development of my country's energy industry, the annual growth rate of power generation capacity is 7.3%. The rapid development of the power industry has brought about a sharp increase in fly ash emissions. The total amount of fly ash discharged by coal-fired thermal power plants is increasing year by year The total amount of fly ash discharged by coal-fired thermal power plants has increased year by year, which has caused huge pressure on my country's national economic construction and ecological environment. On the other hand, our country is a country with limited resource reserves per capita. The comprehensi...
Claims
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IPC IPC(8): G01N33/2028C01F7/08C01F7/14C01F7/06C01F7/47
CPCG01N33/2028C01F7/08C01F7/142C01F7/062C01F7/47C01F7/144
Inventor 李从运崔建伟
Owner 谷城宏业耐火材料有限公司