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A kind of method for preparing artificial rutile by iron salt solution leaching method

A technology of artificial rutile and leaching method, applied in the field of chemical metallurgy, can solve the problems of complex process and equipment, too long reaction time, etc., and achieve the effects of reducing equipment investment and operating costs, reducing energy consumption, and reducing emissions

Inactive Publication Date: 2019-03-08
郑祥发
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The existing industrial production methods essentially separate iron, calcium, magnesium and other impurities in ilmenite to achieve the purpose of enriching ilmenite, but there are complex processes and equipment, and long reaction time. question

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  • A kind of method for preparing artificial rutile by iron salt solution leaching method

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Embodiment 1

[0036] The processing steps of the method for preparing artificial rutile by the iron salt solution leaching method of the present embodiment are:

[0037] (1) After mixing titanium concentrate and reduced coal at a mass ratio of 3:1, put it into the kiln for calcination from the kiln tail of the rotary kiln, and at the same time blow natural gas into the kiln head with a spray gun. The calcination temperature is 1120°C and the calcination time is 12h , the material after calcination enters the cooling kiln, and the temperature of the material after cooling is 45 ° C. After leaving the kiln, it is screened and magnetically separated to obtain ferro-titanium fine powder with a metallization rate of 90.8%;

[0038] (2) the ferro-titanium fine powder obtained by step (1) is continuously added in the net solution of iron salt, and leaching reaction is carried out, and the elemental iron in the ferro-titanium fine powder is reduced to ferrous iron salt by the ferric salt; the leachi...

Embodiment 2

[0044] The processing steps of the method for preparing artificial rutile by the iron salt solution leaching method of the present embodiment are:

[0045] (1) After mixing titanium concentrate and reduced coal at a mass ratio of 4:1, press it into pellets with a diameter of 40mm through a high-pressure roller press, and put them into a rotary hearth furnace for calcination. The calcination temperature is 1350°C, and the calcination time is 0.5h. After calcination, the material enters the cooling cylinder. After cooling, the temperature of the pellets is 50°C. After the pellets are crushed, sieved, and magnetically separated, ferro-titanium powder with a metallization rate of 92.1% is obtained;

[0046] (2) Add 92% concentrated sulfuric acid to the reaction pot, then add iron fine powder, stir, the mass ratio of concentrated sulfuric acid to iron fine powder is 1.40:1; then add water to the reaction pot while stirring to trigger acidolysis Reaction, after the mixture has acido...

Embodiment 3

[0053] The processing steps of the method for preparing artificial rutile by the iron salt solution leaching method of the present embodiment are:

[0054] (1) After mixing titanium concentrate and reduced coal at a mass ratio of 5:1, the kiln head of the tunnel kiln is put into the kiln for calcination. The temperature of the calcination kiln is 1180°C, and the calcination time is 16 hours. The temperature of the material after coming out of the tunnel kiln is At 55°C, after leaving the kiln, the material is crushed, screened, and magnetically separated to obtain ferro-titanium fine powder with a metallization rate of 89.7%;

[0055] (2) 93% concentrated sulfuric acid is added in the reaction pot, then add ilmenite concentrate, stir, the mass ratio of concentrated sulfuric acid and iron concentrate powder is 1.60:1; Stir while adding water in the reaction pot to cause acidolysis reaction, After the acidolysis reaction of the mixture, the reaction acid concentration is control...

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Abstract

The invention relates to a method of preparing artificial rutile with a ferric salt solution leaching method and belongs to the technical field of chemical metallurgy. The method of preparing high-grade artificial rutile by taking sand titanium concentrates as a raw material is simple in process and equipment, convenient to operate and low in production cost and overcomes the defects of higher energy consumption and difficulty in treating waste liquid. The method comprises the following steps: titanium concentrate strong reduction, ferric salt solution leaching, solid-liquid separation, solid substance washing and drying and filtrate purification. The method of preparing the artificial rutile with the ferric salt solution leaching method enables titanium oxides to form a more stable porous solid solution structure by controlling atmosphere and adopting high-temperature strong reduction, accelerates the leaching reaction speed of iron and prevents titanium-containing particles from pulverizing at the same time; and the obtained artificial rutile as a product is better in particle size distribution and proper in particle size and is an ideal raw material for producing titanium tetrachloride by fluidizing chlorination.

Description

technical field [0001] The invention belongs to the technical field of chemical metallurgy, and in particular relates to a method for preparing high-grade artificial rutile from placer titanium concentrate. Background technique [0002] The production of artificial rutile is one of the enrichment processes of titanium mineral raw materials, mainly high-titanium materials that remove non-titanium impurities through wet treatment. Artificial rutile is one of the main raw materials for the production of titanium tetrachloride, and titanium tetrachloride is an intermediate raw material for the production of titanium dioxide and titanium sponge. Therefore, the improvement of artificial rutile production process, the increase of output, the reduction of production cost and the improvement of product quality will have a significant impact on the production of sponge titanium and titanium dioxide. [0003] The preparation process of artificial rutile is relatively complicated. At p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/053C01G49/02C01G49/10C01G49/14
CPCC01G23/053C01G49/02C01G49/10C01G49/14C01P2004/51C01P2006/80
Inventor 郑祥发
Owner 郑祥发
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