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A method of using red mud to treat potassium feldspar acid leaching iron removal waste liquid

A technology of feldspar acid and red mud, which is applied in water/sludge/sewage treatment, water/sewage treatment, chemical instruments and methods, etc., can solve problems such as land occupation and environmental pollution, and reduce treatment costs and reduce environmental pollution. Pollution, effect of simple modification method

Active Publication Date: 2021-08-24
贺州市骏鑫矿产品有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large amount of red mud cannot be fully and effectively recycled, and can only be stacked in a large area, occupying a large amount of land and causing serious pollution to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method of using red mud to treat potassium feldspar acid leaching and iron removal waste liquid, wherein the potassium feldspar acid leaching iron removal waste liquid refers to the potassium feldspar after acid leaching and iron removal by using sulfuric acid with a mass fraction of 40%. waste liquid.

[0023] Described processing method comprises the steps:

[0024] (1) Red mud pretreatment:

[0025] The selected red mud is 30 mesh particles, and its main components are calculated by mass fraction, specifically SiO2: 24.51%, CaO: 25.02%, Fe2O3: 12.33%, Al2O3: 17.45%, TiO2: 3.96%, MgO: 2.07%, Na2O : 8.97%.

[0026] Spray the ammonium molybdate aqueous solution with a mass fraction of 0.4% on the red mud, and the spraying amount is 70mL of the ammonium molybdate aqueous solution per kg of red mud. After mixing evenly, place it at 50°C for activation for 2 hours; % potassium lactate solution, the spraying amount is to spray 150mL potassium lactate solution per kg re...

Embodiment 2

[0031] A method for treating potassium feldspar acid leaching iron removal waste liquid by using red mud, the potassium feldspar acid leaching iron removal waste liquid refers to the potassium feldspar after acid leaching iron removal with hydrochloric acid with a mass fraction of 30% waste liquid.

[0032] Described processing method comprises the steps:

[0033] (1) Red mud pretreatment:

[0034] The selected red mud is 20 mesh particles, and its main components, in terms of mass fraction, are specifically SiO2: 26.10%, CaO: 24.55%, Fe2O3: 13.98%, Al2O3: 16.75%, TiO2: 3.14%, MgO: 1.88%, Na2O: 6.53%.

[0035] Spray the ammonium molybdate aqueous solution with a mass fraction of 0.4% on the red mud, the spraying amount is 60mL ammonium molybdate aqueous solution per kg of red mud, after mixing evenly, place it at a temperature of 55°C for 1.5h; then spray the mass fraction as 20% potassium lactate solution, the spraying amount is 120mL potassium lactate solution per kg red ...

Embodiment 3

[0040] A method of using red mud to treat potassium feldspar acid leaching and iron removal waste liquid, wherein the potassium feldspar acid leaching iron removal waste liquid refers to the potassium feldspar after acid leaching and iron removal by using sulfuric acid with a mass fraction of 40%. waste liquid.

[0041] Described processing method comprises the steps:

[0042] (1) Red mud pretreatment:

[0043]The selected red mud is 40 mesh particles, and its main components, in terms of mass fraction, are specifically SiO2: 25.76%, CaO: 26.81%, Fe2O3: 11.50%, Al2O3: 16.00%, TiO2: 5.08%, MgO: 2.66%, Na2O: 8.65%.

[0044] Spray the ammonium molybdate aqueous solution with a mass fraction of 0.3% on the red mud, the spraying amount is 80mL ammonium molybdate aqueous solution per kg of red mud, after mixing evenly, place it at 45°C for 2.5h; then spray the mass fraction as 20% potassium lactate solution, the spraying amount is 180mL potassium lactate solution per kg red mud, ...

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PUM

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Abstract

The invention discloses a method for treating potassium feldspar acid leaching waste liquid for iron removal by using red mud, belonging to the field of waste liquid treatment. The invention comprises the following steps: (1) red mud pretreatment: heat-activate red mud with ammonium molybdate aqueous solution and potassium lactate solution to obtain activated red mud; add desulfurized gypsum to activated red mud, and mix uniformly to obtain a mixture , put the mixture in atmospheric steam for thermal modification treatment for 20-50min to obtain modified red mud; (2) add calcium formate aqueous solution to potassium feldspar acid leaching iron removal waste liquid, then add modified red mud , stir and mix and adjust the pH value of the liquid to 6-7, stop stirring, after standing and settling, the separated supernatant is recovered as the rinse water after potassium feldspar acid leaching. The invention has high treatment efficiency and good treatment effect, and the treated waste liquid can be recycled to reduce environmental pollution.

Description

technical field [0001] The invention relates to a waste liquid treatment method, in particular to a method for treating potassium feldspar acid leaching waste liquid for iron removal by using red mud. Background technique [0002] Potassium feldspar is a potassium-containing framework silicate, which has the characteristics of low melting point, long melting interval, high melt viscosity, etc. It is widely used in ceramic blanks, ceramic glazes, glass, electric porcelain, abrasive materials, etc.; Stone raw materials have accounted for more than 50% of the entire raw material formula of ceramic products such as ceramic glazes, polished tiles, and sanitary porcelain, and their quality directly affects the quality grades of ceramic and glass products. In recent years, with the rapid development of new architectural glass, architectural ceramics and daily-use ceramics industry and the urgent requirements of environmental protection, the grade and iron content of potassium felds...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52
CPCC02F1/5236C02F1/5263
Inventor 邓培有
Owner 贺州市骏鑫矿产品有限责任公司