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Inorganic ferrotitanium polymeric coagulant with ilmenite as raw material and preparation technology thereof

A technology of ilmenite and coagulant, which is applied in the field of water treatment to achieve the effect of reducing preparation cost and low preparation cost

Inactive Publication Date: 2015-03-04
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, in domestic and foreign literature databases, there is no relevant report on the preparation of water treatment coagulants using ilmenite as raw material

Method used

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  • Inorganic ferrotitanium polymeric coagulant with ilmenite as raw material and preparation technology thereof
  • Inorganic ferrotitanium polymeric coagulant with ilmenite as raw material and preparation technology thereof
  • Inorganic ferrotitanium polymeric coagulant with ilmenite as raw material and preparation technology thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Crush the ilmenite into powder. Heat 15mL of concentrated sulfuric acid solution to 120°C~150°C, the mass fraction of concentrated sulfuric acid solution is 75%, and then add 10kg of powdered ilmenite to the In the above concentrated sulfuric acid solution, continue to heat to 170°C~190°C, react for 1 minute to 5 minutes, then cool to 100°C~110°C to obtain a foamy solidified product for later use. Add 20mL of dilute sulfuric acid solution to the above-mentioned foamy cured product, the mass fraction of the dilute sulfuric acid solution is 20%, start stirring after 1 minute to 3 minutes, the stirring speed is 50 rpm to 80 rpm, and the reaction time is controlled For 10 minutes to 20 minutes, obtain a suspension, filter to obtain a leaching solution, and set aside. At a stirring speed of 150 rpm to 350 rpm, 13 mL of sodium hydroxide solution was added to the above leaching solution to obtain a mixed solution. The molar fraction of the sodium hydroxide solution was 17 mol...

Embodiment 2

[0030] Crush the ilmenite into powder. Heat 15mL of concentrated sulfuric acid solution to 120°C~150°C, the mass fraction of concentrated sulfuric acid solution is 75%, and then add 10kg of powdered ilmenite to the In the above concentrated sulfuric acid solution, continue to heat to 170°C~190°C, react for 1 minute to 5 minutes, then cool to 100°C~110°C to obtain a foamy solidified product for later use. Add 30mL of dilute sulfuric acid solution to the above-mentioned foamy cured product, the mass fraction of the dilute sulfuric acid solution is 30%, start stirring after 1 minute to 3 minutes, the stirring speed is 50 rpm to 80 rpm, and the reaction time is controlled For 10 minutes to 20 minutes, obtain a suspension, filter to obtain a leaching solution, and set aside. At a stirring speed of 150 rpm to 350 rpm, 18 mL of sodium hydroxide solution was added to the above leaching solution to obtain a mixed solution. The molar fraction of the sodium hydroxide solution was 19 mol / L...

Embodiment 3

[0032] Crush the ilmenite into powder. Heat 15mL of concentrated sulfuric acid solution to 120°C~150°C, the mass fraction of concentrated sulfuric acid solution is 75%, and then add 10kg of powdered ilmenite to the In the above concentrated sulfuric acid solution, continue to heat to 170°C~190°C, react for 1 minute to 5 minutes, then cool to 100°C~110°C to obtain a foamy solidified product for later use. Add 20mL of dilute sulfuric acid solution to the above-mentioned foamy cured product, the mass fraction of the dilute sulfuric acid solution is 40%, start stirring after 1 minute to 3 minutes, the stirring speed is 50 rpm to 80 rpm, and the reaction time is controlled For 10 minutes to 20 minutes, obtain a suspension, filter to obtain a leaching solution, and set aside. At a stirring speed of 150 rpm to 350 rpm, 25 mL of sodium hydroxide solution was added to the above leaching solution to obtain a mixed solution. The molar fraction of the sodium hydroxide solution was 16 mol...

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Abstract

Belonging to the technical field of water treatment, the invention relates to an inorganic ferrotitanium polymeric coagulant with ilmenite as the raw material and a preparation technology thereof. The technology comprises the steps of: (1) taking ilmenite as the main raw material, under certain temperature and stirring conditions, taking sulfuric acid of different concentrations respectively to dissolve ilmenite, then carrying out foam type curing and leaching two-stage reaction; and (2) under certain temperature and stirring conditions, employing a sodium hydroxide solution with certain concentration to adjust the acid-base value of the leaching solution, controlling the pH value at 0.5-1.5, and then carrying out polymerization reaction under a reaction temperature of 20DEG C-60DEG C. The method provided by the invention can prepare the inorganic ferrotitanium polymeric coagulant with the advantages of high ilmenite utilization rate, low preparation cost, excellent water treatment effect, and especially high organic matter removal and color removal efficiency. The inorganic ferrotitanium polymeric coagulant provided by the invention can be widely applied to urban sewage, industrial wastewater and other fields.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and relates to an inorganic ferro-titanium polymerization coagulant using ilmenite as a raw material and a preparation technology thereof. Background technique [0002] Titanium (Ti) is mainly ilmenite (FeTiO 3 ) and rutile (TiO 2 ) exists in the form of Ilmenite (FeTiO 3 ) reserves are large and widely distributed throughout the world, mainly concentrated in China, Australia, India, South Africa, Brazil and other countries. According to the data released by the United States Geological Survey (USGS) (2012), the global ilmenite reserves are 650 million tons. my country's ilmenite resources are very rich, with a total reserve of about 200 million tons, accounting for 28.9% of the total reserves, ranking first in the world. my country's currently proven titanium resources are mainly distributed in 21 provinces: Sichuan, Hebei, Hainan, Guangdong, Hubei, Guangxi, Yunnan, Shaanxi, Shanxi ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C22B3/08
CPCC02F1/5236C02F2305/00C22B3/08Y02P10/20
Inventor 付英苏漫漫王景芝
Owner UNIV OF JINAN
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