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Process for producing potassium fluotitanate by environment-friendly treating fluorine-contained and potassium-contained waste

A technology for potassium fluorotitanate and environmental protection treatment, which is applied in the fields of titanium compounds, chemical instruments and methods, and inorganic chemistry. Conditions are easy to control, good social value and economic value, no secondary pollution effect

Active Publication Date: 2013-01-30
福建省漳平市九鼎氟化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Wastes containing fluorine and potassium are by-product wastes in the production process of organic fluorine chemical industry, medicine and pesticide chemical industry. In recent years, my country's organic fluorine chemical industry, pharmaceutical and pesticide chemical industry have developed rapidly, and hundreds of thousands of tons of waste liquid and waste residue containing fluorine and potassium are produced every year. At present, the fluorine and potassium in it have been initially recycled, and most of them are used in the steel product cleaning industry, elemental silicon (electrolytic silicon, single crystal silicon, polycrystalline silicon) washing and production of inorganic fluoride salts, but biological degradation is harmful to bacteria The selection of species is a big problem, and the complex organic components are difficult to be effectively treated, causing great pollution to the environment
[0003] Potassium fluotitanate is mainly used in aluminum alloy, steel, ceramics and other industries. At present, the demand for potassium fluotitanate is stable. The main production method is to use genuine hydrofluoric acid, titanium ore, and imported potassium chloride as the main raw materials. And the high price of imported potassium chloride results in high production cost of potassium fluotitanate

Method used

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  • Process for producing potassium fluotitanate by environment-friendly treating fluorine-contained and potassium-contained waste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] This example uses the following raw materials

[0048] 1. Fluorine-containing waste liquid HF25.3%

[0049] 2. Potassium-containing waste residue mainly contains potassium chloride K 2 O 58.1% F 3.1%

[0050] 3. Titanium ore (nFe 2 o 3 ·mFeO ·(3 / 2n+m)TiO 3 ) containing Ti 29.5%

[0051] Specifically include the following steps:

[0052] (1) First add 3000Kg of fluorine-containing waste liquid and 105Kg of potassium-containing waste residue into the leaching tank, start stirring, add 1080Kg of titanium ore, seal and continue to react for 2 hours, and the leaching temperature reaches 92°C;

[0053] (2) Pump the slurry qualified for leaching into the clarification tank, settle and remove impurities for 16 hours to obtain ferric fluorotitanate clear liquid, the temperature is 51°C;

[0054] (3), Potassium-containing waste residue 1100 Kg is dissolved in 3000 Kg water to obtain potassium liquid, and the clear liquid is subsequent use after press filtration;

[0055]...

Embodiment 2

[0062] This example uses the following raw materials

[0063] 1. Fluorine-containing waste liquid HF33.2%

[0064] 2. Potassium-containing waste residue mainly contains potassium chloride K 2 O 54.1% F 4.3%

[0065] 3. Titanium ore (nFe 2 o 3 ·mFeO ·(3 / 2n+m)TiO 3 ) T iO 3 ) containing Ti 29.5%

[0066] Specifically include the following steps:

[0067] (1), first add 2250Kg of fluorine-containing waste liquid and 105Kg of potassium-containing waste residue into the leaching tank, start stirring, add 1080Kg of titanium ore, seal and continue to react for 2 hours, and the leaching temperature reaches 105°C;

[0068] (2) Pump the slurry qualified for leaching into the clarification tank, settling and removing impurities for 20 hours to obtain ferric fluorotitanate clear liquid at a temperature of 55°C;

[0069] (3), Potassium-containing waste residue 1200 Kg gets potassium liquid with 3000 Kg water dissolving, clear liquid is subsequent use after press filtration;

[0...

Embodiment 3

[0077] This example uses the following raw materials

[0078] 1. Fluorine-containing waste liquid a HF8.1%

[0079] 2. Fluorine-containing waste liquid b HF43.5%

[0080] 3. Potassium-containing waste residue mainly contains potassium chloride K 2 O 58.1% F 3.1%

[0081] 4. Titanium ore (nFe 2 o 3 ·mFeO ·(3 / 2n+m)TiO 3 ) containing Ti 29.5%

[0082] Specifically include the following steps:

[0083] (1), first add two kinds of fluorine-containing waste liquid a, b each 1400Kg and 105Kg of fluorine-containing waste liquid and potassium-containing waste residue in the leaching tank, start stirring, add 1080Kg of titanium ore, seal and continue to react for 2 hours, the leaching temperature reach 95°C;

[0084] (2) Pump the slurry qualified for leaching into the clarification tank, settling and removing impurities for 24 hours to obtain ferric fluorotitanate clear liquid at a temperature of 50°C;

[0085] (3), Potassium-containing waste residue 1100 Kg is dissolved in 30...

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Abstract

The invention relates to a process for producing potassium fluotitanate by environment-friendly treating fluorine-contained and potassium-contained waste, and the process comprises the following steps of placing titanium ore with theoretical quantity into fluorine-contained waste liquid and potassium liquid to prepare potassium fluotitanate slurry; placing clear liquid after the potassium-containing slag or waste liquid is filtered into potassium fluotitanate clear liquor to prepare the potassium fluotitanate; carrying out liquid-solid separation, washing and drying of potassium fluotitanate slurry liquid, placing lime into the waste slag and the waste water to adjust the pH value, and filtering the waste slag and the waste water to obtain filter slag, placing the filter liquid into a degrading pond, adding oxidant, utilizing the ultraviolet light to radiate the filter liquid for 1 to 5h, and detecting chemical oxygen demand (COD) and analyzing F-. The fluorine-contained and potassium-contained waste is used for substituting the hydrogen fluoride and the imported potassium fluoride to produce the potassium fluotitanate, so that waste can be converted into treasure, the recycling rate of the fluorine, the titanium and the potassium is not different from the quality product raw material, fluorine and potassium are adequately utilized, the production cost of the potassium fluotitanate is reduced, and the problem of the environmental pollution caused by the fluorine-contained waste and the potassium-contained waste can be solved.

Description

technical field [0001] The invention relates to a method for treating waste containing fluorine, potassium and organic matter and a method for producing inorganic fluoride salts, in particular to a process for producing potassium fluorotitanate by environmentally friendly treatment of waste containing fluorine and potassium. Background technique [0002] Wastes containing fluorine and potassium are by-product wastes in the production process of organic fluorine chemical industry, medicine and pesticide chemical industry. In recent years, my country's organic fluorine chemical industry, pharmaceutical and pesticide chemical industry have developed rapidly, and hundreds of thousands of tons of waste liquid and waste residue containing fluorine and potassium are produced every year. At present, the fluorine and potassium in it have been initially recycled, and most of them are used in the steel product cleaning industry, elemental silicon (electrolytic silicon, single crystal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/00
Inventor 喻鼎辉沈甫原
Owner 福建省漳平市九鼎氟化工有限公司
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