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Method for Improving Chlorination Efficiency of Titanium-Containing Blast Furnace Slag

A technology of blast furnace slag and high efficiency, which is applied in the field of chemical engineering, can solve the problems of low titanium boiling chlorination rate in carbide slag particle size distribution, affecting the economy of the whole process, and affecting the efficiency of Ti recovery and utilization, so as to achieve a small footprint and improve recovery Good utilization efficiency and continuous stability

Active Publication Date: 2017-07-11
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the current carbide slag has a wide particle size distribution, uniform operating conditions and a single reactor have a low boiling chlorination rate of titanium in carbide slag, which seriously affects the efficiency of Ti recovery and utilization, and affects the economy of the whole process.

Method used

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  • Method for Improving Chlorination Efficiency of Titanium-Containing Blast Furnace Slag
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  • Method for Improving Chlorination Efficiency of Titanium-Containing Blast Furnace Slag

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Embodiment 1

[0028] This example is a semi-industrial test, using a Φ100mm fluidized grading device, a Φ100mm quartz glass boiling chlorination reactor, and using a Roots blower to pressurize the air as the fluidization process wind. Blast furnace slag, treated with 10kt / aTiCl 4 On the industrial demonstration line, the electric furnace is used for high-temperature reduction and crushed into 80-400 mesh carbide slag. Its typical particle size distribution is shown in Table 1. Mainly select ≥140 mesh carbonized slag and enter the coarse-grained fluidized chlorination furnace for boiling chlorination; ≤200 mesh fine-grained carbonized slag is selected and enter the fine-grained chlorination furnace for boiling chlorination; 120-200 mesh The fine-grained carbide slag is selected for boiling chlorination in a fine-grained fluidized chlorination furnace. By classifying and adjusting different boiling chlorination process operating conditions, boiling chlorination of carbide slag with differen...

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Abstract

The invention belongs to the field of chemical engineering, particularly relates to a method for improving the chlorinating efficiency of titanium-bearing blast furnace slag, and aims at solving the technical problems that at present, due to the fact that the low-temperature chlorination rate of carbide slag is low, the recycling efficiency of Ti is seriously affected, and the economical efficiency of the whole process is affected. The method for improving the chlorinating efficiency of the titanium-bearing blast furnace slag comprises the following steps that 1, the carbide slag which is subjected to high-temperature thermal reduction treatment and smashed into 80-400 meshes is divided into coarse fraction carbide slag, fine fraction carbide slag and micro-fine fraction carbide slag; 2, the coarse fraction carbide slag, the fine fraction carbide slag and the micro-fine fraction carbide slag are added into three boiling chlorination reactors for boiling chlorination respectively. According to the method, the chlorinating efficiency of blast furnace slag is effectively improved, and the recycling efficiency of Ti is greatly improved.

Description

technical field [0001] The invention belongs to the field of chemical engineering, and in particular relates to a method for improving the chlorination efficiency of titanium-containing blast furnace slag. Background technique [0002] The reserves of vanadium-titanium magnetite are very rich in the world, and the reserves in my country are among the best. The reserves in Panxi area reach 10 billion tons, and the total reserves of titanium resources rank first in the country. Vanadium-titanium magnetite is a multi-element symbiotic ore, which contains 30-34 wt% iron (existing in the form of iron oxide in the ore), and is mainly used as raw material for extracting iron, vanadium and titanium. [0003] The vanadium-titanium iron concentrate produced in Panxi area contains a certain amount of TiO 2 , After blast furnace smelting, it enters the blast furnace slag and discards it, which has not been fully utilized, which greatly affects the comprehensive utilization efficiency o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/02
CPCC01G23/022
Inventor 叶恩东缪辉俊张继东韩可喜张溅波吴轩
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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