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Method of preparing synthetic rutile from ore type ilmenite concentrate

A technology of artificial rutile and ilmenite concentrate, applied in the direction of furnace type, titanium dioxide, titanium oxide/hydroxide, etc., can solve the problems of difficult reduction technology, ring formation in rotary kiln, long corrosion time, etc. Eliminate hidden dangers, ensure quality, and reduce the effect of reduction temperature

Inactive Publication Date: 2008-04-23
CENT SOUTH UNIV
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Problems solved by technology

Judging from the research and production practice of man-made rutile by reduction corrosion method, the reduction corrosion method is currently only suitable for processing high-grade placer, and the method still has problems such as difficult reduction technology and long corrosion time.
In addition, because the industry adopts the operation method of directly feeding the mineral powder into the rotary kiln, there is a hidden danger of ring formation in the rotary kiln
[0003] There is no report on the research on the treatment of rock ore-type ilmenite concentrate by reduction corrosion method

Method used

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  • Method of preparing synthetic rutile from ore type ilmenite concentrate

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Embodiment Construction

[0016] 1: Rock ore type ilmenite concentrate (TiO 2 47.16%, TFe 31.47%) with additive pelletizing. The additive sodium humate is added in an amount of 1.5%. After the raw balls are dried and preheated by the grate machine, they enter the rotary kiln for reduction. The drying and preheating system of the grate machine is as follows: the material height is 200mm, the air temperature in the blast drying section is 200°C, the wind speed is 1.0m / s, and the time is 2min. The air temperature in the section is 250°C, the wind speed is 1.0m / s, and the time is 5min. The air temperature in the preheating section is 800-950°C, the wind speed is 1.2m / s, and the time is 12min; , the reduction time is 150min, the C / Fe ratio is 0.8, and the metallization rate of the obtained reduced ilmenite is 93.78%. The reduced ilmenite ore is crushed and ground, and the grinding particle size is controlled at -1mm to account for 100%, and then the rust separation treatment is carried out. The rust sep...

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Abstract

The invention discloses an artificial rutile preparing method through rock ilmenite concentrate, which comprises the following steps: preheating rock ilmenite concentrate in the rotary kiln to reduce directly; separating the corrosion of reduced ilmenite; immersing material with titanium in the diluted acid to remove impurity to prepare the artificial rutile.

Description

technical field [0001] The invention belongs to the field of metallurgical engineering, and relates to a method for preparing artificial rutile by using a rock ore type ilmenite concentrate as a raw material and adopting a reduction-corrosion method. Background technique [0002] At present, the world's titanium resources that can be used for titanium industrial production are mainly natural rutile and ilmenite. However, the reserves of natural rutile concentrate are small, and ilmenite with abundant reserves has become the main raw material for the titanium industry. In nature, ilmenite is divided into two types: rock ore and placer, among which rock ore is the majority. The ilmenite concentrate selected from rock ore and placer can be directly used to produce metal titanium and titanium dioxide, but because of its low grade, it generally needs to be enriched into high-grade titanium-rich material-titanium slag or artificial rutile , and then used in the production of tit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/047C22B1/216C22B3/10C22B3/14
Inventor 邱冠周姜涛郭宇峰黄柱成李光辉肖春梅杨永斌许斌朱德庆范晓慧董海刚张元波朱忠平唐娟江源金勇士
Owner CENT SOUTH UNIV
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