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Formula of red mud slurry for desulfuration and preparation method of red mud slurry

A technology for red mud and red mud, which is applied in separation methods, chemical instruments and methods, gas treatment, etc., to achieve the effect of reasonable formula and simple preparation method

Inactive Publication Date: 2016-03-23
HEBEI CONSTR & INVESTIGATION RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

What is the desulfurization effect of red mud, how to apply red mud as a desulfurizer in actual production, and what reaction ratio should be controlled to achieve the desired effect. There is still no authoritative conclusion on these issues.

Method used

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  • Formula of red mud slurry for desulfuration and preparation method of red mud slurry
  • Formula of red mud slurry for desulfuration and preparation method of red mud slurry
  • Formula of red mud slurry for desulfuration and preparation method of red mud slurry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1 (flue gas SO 2 Concentration is 600ppm, percentage concentration of red mud slurry is 4%)

[0021] (1) Screen and filter the red mud to remove the sundries and large particles of solid matter, and perform a certain refinement treatment on it to make each part more uniform and ready for use;

[0022] (2) Select representative samples to test their moisture content, and take the average value of 64% as the representative value of natural moisture content.

[0023] (3) Use the following formula to calculate the required amount of red mud and water:

[0024]

[0025] According to the slurry concentration of 4%, in the formula, A: solid-liquid ratio = 1 / 24, M = 200kg, : the water content of red mud is 64%, and it is obtained: m w : The quality of adding water 186.88kg; m r =13.12kg.

[0026] (4) Add the calculated amount of red mud and water into the mixer and stir for 40-60 minutes to form a uniform red mud slurry. The parameters of the obtained slurry are ...

Embodiment 2

[0031] Example 2 (flue gas SO 2 Concentration is 1000ppm, concentration of red mud slurry is 6%)

[0032] (1) Screen and filter the natural red mud to remove the sundries and large particles of solid matter, and perform a certain refinement treatment on it to make each part more uniform and ready for use;

[0033] (2) The average water content of the red mud sample is 64%, which is used as the representative value of the water content of the red mud;

[0034] (3) Use the formula to calculate the required amount of red mud and water;

[0035]

[0036] According to the slurry concentration of 6%, in the formula, A: solid-liquid ratio = 3 / 47, M = 200kg, : red mud water content 64%, get: m w : The quality of adding water is 180.32kg; the quality of red mud is 19.68kg.

[0037] (4) Add the determined red mud and water into the mixer and stir for 40-60 minutes to form a uniform red mud slurry. The parameters of the obtained slurry are shown in Table 2:

[0038] Table 2

[00...

Embodiment 3

[0042] Example 3 (flue gas SO 2 Concentration is 1500ppm, red mud slurry 8%)

[0043] (1) Screen and filter the natural red mud to remove the sundries and large particles of solid matter, and perform a certain refinement treatment on it to make each part more uniform and ready for use;

[0044] (2) The water content of the red mud sample is 64%, which is used as the representative value of the water content of the red mud;

[0045] (3) Use the formula to calculate the required amount of red mud and water;

[0046]

[0047] According to the slurry concentration of 8%, in the formula, A: solid-liquid ratio = 2 / 23, M = 200kg,: red mud water content 64%, get: m w : The quality of adding water is 173.76kg; the quality of red mud is 26.24kg.

[0048] (4) Add the determined red mud and water into the mixer and stir for 40-60 minutes to form a uniform red mud slurry. The parameters of the obtained slurry are shown in Table 3:

[0049] table 3

[0050]

[0051] (5) The param...

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Abstract

The invention discloses a formula of red mud slurry for desulfuration and a preparation method, and belongs to the technical field of environment protection. Tailing red mud discharged in the alumina production process serves as the basic raw material, and different volumes of water are added according to the water content of the slurry and the different concentrations of to-be-prepared slurry after filtering and refining are conducted so that a mixture of red mud and water can be evenly stirred and red mud slurry capable of being used for the industrial desulfuration process can be obtained. The formula of red mud slurry can be applied to smoke desulfuration in production of a thermal power enterprise, and the basis and method are provided for designing the red mud slurry desulfuration process. Waste is utilized, and the formula has an effect on promoting harmless treatment and reuse of red mud tailings.

Description

technical field [0001] The invention relates to a formula of red mud slurry for desulfurization and a preparation method thereof, belonging to the technical field of environmental protection. Background technique [0002] Red mud is a very fine-grained strongly alkaline solid waste produced during the production of alumina from bauxite. Red mud contains a large amount of strongly alkaline chemical substances. After being diluted 10 times, its pH value is still 11.25-11.50 ( The original soil is above 12), and the extremely high pH value determines the strong corrosiveness of red mud. my country's alumina enterprises produce tens of millions of tons of red mud annually, and its discharge and storage occupy a large amount of land resources, resulting in a large amount of waste of land resources and even serious environmental pollution. With the gradual deepening of people's understanding of red mud, there are more and more researches on red mud. Red mud and its solution are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/80B01D53/50
CPCB01D53/80B01D53/502B01D2257/302B01D2259/126
Inventor 聂庆科王英辉李华伟贾向新梁书奇秦禄盛于俊超
Owner HEBEI CONSTR & INVESTIGATION RES INST