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Method for preparing water purifying agent poly-ferric sulfate chloride by utilizing iron-containing wastewater in potassium fluotitanate production

A technology of ferric sulfate chloride and potassium fluorotitanate, applied in chemical instruments and methods, multi-stage water/sewage treatment, neutralized water/sewage treatment, etc., can solve problems such as iron-containing wastewater pollution, and achieve simplified treatment process , overcoming poor, easy-to-control effects

Inactive Publication Date: 2010-07-28
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For above-mentioned situation, the purpose of the present invention is to provide a kind of method that utilizes the iron-containing wastewater produced by potassium fluorotitanate to prepare polyferric sulfate chloride water purifying agent, solve the pollution problem of the iron-containing wastewater produced by potassium fluorotitanate, realize fluorine Zero discharge of wastewater from the production of potassium titanate; at the same time, a high-efficiency and high-value-added polymeric ferric sulfate chloride water purifier has been produced, achieving the dual effects of resource utilization of iron-containing wastewater and turning waste into treasure

Method used

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  • Method for preparing water purifying agent poly-ferric sulfate chloride by utilizing iron-containing wastewater in potassium fluotitanate production
  • Method for preparing water purifying agent poly-ferric sulfate chloride by utilizing iron-containing wastewater in potassium fluotitanate production
  • Method for preparing water purifying agent poly-ferric sulfate chloride by utilizing iron-containing wastewater in potassium fluotitanate production

Examples

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Effect test

Embodiment 1

[0032] (1) Add 75L of iron-containing waste water produced by filtered potassium fluotitanate into a 150L corrosion-resistant reactor, add 62kg of vitriol and 3.84L of industrial sulfuric acid with a concentration of 98% by mass, and then add dihydrogen phosphate Sodium-sodium tartrate composite stabilizer (the mol ratio of sodium tartrate and phosphorus is 0.1: 1) 4.60kg, be warming up to 50 ℃ of dissolvings and make solution;

[0033] (2) Slowly add a saturated solution containing 4.72kg of sodium chlorate dropwise to the above solution, and react at 60-70°C for 1 hour to obtain a dark red transparent viscous liquid, and measure its T Fe=10.52%, B=7.11%, density ρ=1.41g / cm 3 (20°C), sample A, that is, water purifying agent.

Embodiment 2

[0035] (1) Add 75L of iron-containing waste water produced by filtered potassium fluotitanate into a 150L corrosion-resistant reactor, add 62kg of vitriol and 3.38L of industrial sulfuric acid with a concentration of 98% by mass, and then add dihydrogen phosphate Sodium-sodium tartrate composite stabilizer (the mol ratio of sodium tartrate and phosphorus is 0.126: 1) 5.02kg, be warming up to 60 ℃ of dissolvings and make solution;

[0036] (2) Slowly add a saturated solution containing 4.82kg of sodium chlorate dropwise to the above solution, and react at 70-80°C for 1 hour to obtain a dark red transparent viscous liquid, and measure its T Fe =10.67%, B=8.41%, density ρ=1.42g / cm 3 (20°C), sample B, that is, water purifying agent.

Embodiment 3

[0038] (1) Add 75L of iron-containing waste water produced by filtered potassium fluotitanate into a 150L corrosion-resistant reactor, add 62kg of vitriol and 3.14L of industrial sulfuric acid with a concentration of 98% by mass, and then add dihydrogen phosphate Sodium-sodium tartrate composite stabilizer (the mol ratio of sodium tartrate and phosphorus is 0.15: 1) 5.34kg, be warming up to 70 ℃ of dissolvings and make solution;

[0039] (2) Slowly add a saturated solution containing 4.96kg of sodium chlorate dropwise to the above solution, and react at 70-80°C for 1 hour to obtain a dark red transparent viscous liquid, and measure its T Fe =11.34%, B=9.03%, density ρ=1.43g / cm 3 (20°C), sample C, that is, water purifying agent.

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Abstract

The invention relates to a method for preparing a water purifying agent poly-ferric sulfate chloride by utilizing iron-containing wastewater in potassium fluotitanate production. The invention adopts a technical scheme that: the iron-containing wastewater discharged in the potassium fluotitanate production is directly utilized as a raw material; copperas and industrial sulphuric acid are added to regulate the total iron concentration and the acidity; a phosphate-tartrate composite stabilizer is added into the raw material; and at normal pressure, Fe2+ in the mixture is oxidized into Fe3+ through an oxidizer at the temperature of between 60 and 90 DEG C and the mixture is hydrolyzed to generate the poly-ferric sulfate chloride. In the method, the iron-containing wastewater in the potassium fluotitanate production is fully utilized to prepare the high-efficient poly-ferric sulfate chloride, and defects of poor process effect on the iron-containing wastewater and severe secondary pollution in the prior art are overcome; and the zero emission of the wastewater in the potassium fluotitanate production is realized, and new pollution is not caused so as to achieve the aim of changing the waste into the treasure. The method has the advantages of simple process flow, mild conditions, easy operation and control, no need of special or complicated equipment, small investment, quick effect, obvious economic and environmental benefits, and convenient promotion and industrial production. The product of the invention is suitable to be used as a treatment agent for multiple kinds of industrial wastewater and domestic sewage, particularly for heavy sewage.

Description

technical field [0001] The invention relates to the field of environmental protection and resource utilization, in particular to a method for preparing a polychlorinated ferric sulfate water purifying agent from iron-containing wastewater produced by potassium fluorotitanate. Background technique [0002] Potassium fluorotitanate is mainly used in aluminum processing and light metal smelting, as an additive in the manufacture of aluminum, titanium, and boron alloys; it can also be used as a catalyst for polypropylene synthesis, rubber gelling agent, raw material for titanium metal, and titanium Manufacturing, leather and cotton fabric mordant, etc. The general method for the production of potassium fluorotitanate is as follows: hydrofluoric acid reacts with ilmenite to form ferro-titanium hexafluoride, and then reacts with KCl to form potassium fluorotitanate. A large amount of wastewater is generated during the production process, and the amount of wastewater generated is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F9/04C02F1/66C02F101/20
Inventor 曾荣今刘立华吴俊令玉林李鑫
Owner HUNAN UNIV OF SCI & TECH
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