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Method for improving flotation of ilmenite by using titanium dioxide waste liquid

A technology of titanium dioxide waste liquid and ilmenite, which is applied in flotation, solid separation, etc., can solve the problems of pipeline blockage, high concentration cost, and high transportation cost, so as to improve the grade and recovery rate, improve the flotation index, and reduce the cost effect

Pending Publication Date: 2022-05-13
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the limitation of surrounding copper mines and phosphate rock resources, this method has the problems of small radiation radius and high transportation costs, and it is difficult to implement engineering, and the amount of titanium dioxide waste liquid treatment is very limited.
The concentration process mainly uses vacuum concentration and other processes to prepare titanium dioxide waste liquid into some sulfuric acid, ferrous sulfate and titanium dioxide products. However, most of this process has problems such as pipeline blockage, complicated process flow, and high concentration costs, which restrict its large-scale production. to promote

Method used

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  • Method for improving flotation of ilmenite by using titanium dioxide waste liquid
  • Method for improving flotation of ilmenite by using titanium dioxide waste liquid
  • Method for improving flotation of ilmenite by using titanium dioxide waste liquid

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Embodiment 1

[0050] What used in this embodiment is a certain titanium dioxide waste liquid in Chengde City, and its composition is shown in Table 1.

[0051] Table 1 Chemical composition of a titanium dioxide waste liquid in Chengde (g / L)

[0052]

[0053] The process of salicylic hydroxamate iron / titanium complex collector in the present embodiment is as follows:

[0054] Get 10.40mL of this titanium dioxide waste liquid in a 100mL small beaker, add 1.53g salicylic hydroxamic acid in the beaker (the molar ratio of the iron ion and titanium ion total concentration in the titanium dioxide waste liquid and salicylic hydroxamic acid at this moment is 1.27:1 ) stirring reaction, the stirring speed is 180rpm, the reaction temperature is 25°C, and the reaction time is 5min to prepare the titanium-iron metal organic complex; then add 4.59g sodium oleate and 65.10mL water to the metal organic complex and stir the reaction, the stirring speed is 150rpm / min, the reaction temperature is 25°C, t...

Embodiment 2

[0062] What used in this embodiment is a certain titanium dioxide waste liquid from Panzhihua, and its composition is shown in Table 3.

[0063] Table 3 Chemical composition of a titanium dioxide waste liquid in Panzhihua (g / L)

[0064]

[0065] The process of salicylic hydroxamate iron / titanium complex collector in the present embodiment is as follows:

[0066] Take 9.50mL of titanium dioxide waste liquid in a 100mL small beaker, and add 1.53g of salicylic hydroxamic acid into the beaker (at this time, the molar ratio of the total concentration of iron ions and titanium ions in the titanium dioxide waste liquid to salicylic hydroxamic acid is 1.39:1) Stir the reaction, the stirring speed is 180rpm / min, the reaction temperature is 25°C, and the reaction time is 5min to prepare the titanium-iron metal organic complex; then add 4.59g sodium oleate and 66.00mL water to the metal organic complex and stir the reaction, the stirring speed 150rpm / min, reaction temperature 25°C, r...

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Abstract

A method for improving ilmenite flotation through titanium dioxide waste liquid comprises the following steps that (1) after ilmenite is finely ground, desulfurization flotation is conducted, and sulfur concentrate and roughed ilmenite pulp are obtained; and (2) titanium white waste liquid and a collecting agent are added into the roughed ilmenite ore pulp for flotation, and titanium concentrate is obtained. The waste acid component in the titanium dioxide waste liquid is used for replacing sulfuric acid, bulk consumption of the titanium dioxide waste liquid is achieved, meanwhile, metal ions in the titanium dioxide waste liquid play a role in activating the ilmenite, the salicylhydroxamic acid iron / titanium complex collecting agent prepared through the titanium dioxide waste liquid can effectively improve the flotation index of the ilmenite, and the flotation efficiency of the ilmenite is improved. The titanium dioxide waste liquid is turned into wealth from waste; and the problems that the titanium dioxide waste liquid is difficult to treat and utilize and high in cost, the consumption of metal ions is large in the preparation process of the organic metal complex collecting agent, and the flotation efficiency of ilmenite is low are solved.

Description

technical field [0001] The invention belongs to the technical field of ilmenite flotation, and in particular relates to a method for improving ilmenite flotation by utilizing titanium white waste liquid. Background technique [0002] Titanium dioxide waste liquid is the acidic wastewater produced during the production of titanium dioxide, which may be produced in production processes such as acidolysis, hydrolysis, washing and bleaching. In order to produce high-purity titanium dioxide, the related washing process consumes a lot of water. A titanium dioxide factory with an annual output of 10,000 tons often has a daily waste liquid volume of up to 5000m 3 about. These titanium dioxide waste liquids often contain a large amount of metal ions such as Fe, Al, Ti, Sc, V, etc. If it is discharged directly without treatment, serious ecological problems will occur, which can cause sewer erosion, affect water quality, acidify soil, endanger agriculture and fishery, and infringe dr...

Claims

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Application Information

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IPC IPC(8): B03D1/02B03D1/002B03D1/008B03D101/02B03D103/04
CPCB03D1/025B03D1/002B03D1/008B03D2201/007B03D2201/02B03D2203/04
Inventor 陈攀刘佳燕曹建孙伟
Owner CENT SOUTH UNIV
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