High-calcium-magnesium-titanium dreg modification treatment process

A treatment process, high calcium and magnesium technology, applied in the direction of titanium halide, etc., can solve the problem of not fundamentally solving the problem of material sintering

Active Publication Date: 2018-03-06
SICHUAN HONGDA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main reason is that the existing technical route achieves the effect of adapting to the material characteristics by increasing the difficulty of manipulation and the complexity of the equipment structure.
It is a passive palliative measure that does not fundamentally solve the problem of material sintering

Method used

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  • High-calcium-magnesium-titanium dreg modification treatment process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] First debug the fluidized fluidized furnace, preheat and raise the temperature so that the bottom temperature of the fluidized fluidized furnace is ≥900°C, and the outlet temperature of the condenser is ≥200°C; 3 : Petroleum coke=100:5:40 weight ratio mixes evenly, and mixed raw material is sent into the raw material bin; The mixed raw material in the raw material bin is continuously sprayed into the chlorination furnace by the jet feeder with jet flow rate reaching 200kg / h, When the fixed layer of mixed raw materials injected into the chlorination furnace by continuous injection is > 80cm high, chlorine and oxygen are introduced into the bottom of the furnace at a flow rate of 250-300kg / h, and chlorination reaction occurs with the mixed raw materials in the chlorination furnace. Produced TiCl 4 After the flue gas is discharged from the upper exhaust port of the fluidized fluidized furnace, after being dedusted and purified by the dust collector, it is absorbed and cond...

Embodiment 2

[0064] Continue the chlorination reaction process of above-mentioned embodiment 1, modifier is converted into FeSiF 6 According to the smelting high titanium slag of Panxi mine: modifier FeSiF 6 : Petroleum coke=100:2:40 weight ratio is mixed evenly, and mixed raw material is sent into raw material bin; The mixed raw material in the raw material bin is continuously sprayed into the chlorination furnace by the jet feeder that jet flow reaches 200kg / h, According to the flow rate of 250 ~ 300kg / h, chlorine and oxygen are introduced into the bottom of the furnace, and the chlorination reaction occurs with the mixed raw materials in the chlorination furnace, and the TiCl produced by the reaction is 4 After the flue gas is discharged from the upper exhaust port of the fluidized fluidized furnace, after being dedusted and purified by the dust collector, it is absorbed and condensed by the elution tower and the condenser in turn, and finally TiCl 4 liquid product.

Embodiment 3

[0066] With reference to Example 2, modifying agent is replaced, and Panxi ore smelting titanium slag, modifying agent TiF 4 1. The petroleum coke is mixed evenly according to the weight ratio of 100:8:40, and the mixed raw materials are sent into the raw material bin; the mixed raw materials in the raw material bin are continuously jetted into the chlorination furnace by a jet feeder with a jet flow rate of 200kg / h. According to the flow rate of 250 ~ 300kg / h, chlorine and oxygen are introduced into the bottom of the furnace, and the chlorination reaction occurs with the mixed raw materials in the chlorination furnace, and the TiCl produced by the reaction is 4 After the flue gas is discharged from the upper exhaust port of the fluidized fluidized furnace, after being dedusted and purified by the dust collector, it is absorbed and condensed by the elution tower and the condenser in turn, and finally TiCl 4 liquid product.

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Abstract

The invention discloses a high-calcium-magnesium-titanium dreg (high-titanium dregs with CaO and MgO of which the total amount is greater than 1.5%) modification treatment process which comprises thefollowing steps: putting fluoride as a modification substance into a fluidization chlorination furnace high temperature reaction system or an electric furnace smelting high temperature dreg melting system for preparing high-calcium-magnesium-titanium dregs, introducing impurities of calcium and magnesium of a fluidization chlorination furnace reaction system into the high-calcium-magnesium-titanium dregs, and performing chemical modification, thereby obtaining stable solid phase components such as CaF2, CaAlF5 and MgF2. Therefore, the situation that melting liquids of CaCl2 and MgCl2 which canbe easily enriched and are capable of combining materials into cakes are generated from reactions of impurities such as calcium and magnesium with chlorine in the high temperature fluidization chlorination process is avoided, technical difficulties that conventional high-calcium-magnesium-titanium dregs are easily enriched in a fluidized bed in fluidization chlorination reactions and thus the stability of the fluidized bed is damaged, the purposes of large sizes, automation, cleanness and the like of a fluidization chlorination furnace are not met, and the like, are smartly solved, technicalbottle necks of fluidization chlorination preparation of TiCl4 from titanium resources in Panxi mine regions are broken through, and effective process technique supports are provided for sufficient development and utilization of the titanium resources in the Panxi mine regions in China in large-size fluidization chlorination techniques.

Description

technical field [0001] The invention relates to a new technology field of chemical clean production, and is especially suitable for the modification of high-calcium-magnesium-titanium slag (mainly high-titanium slag smelted by Panxi titanium ore electric furnace, referred to as high-calcium-magnesium-titanium slag) for large-scale boiling chlorination reaction Processing technology. Background technique [0002] Titanium-rich materials such as high-titanium slag, rutile, artificial rutile (main component: TiO 2 ) through high temperature chlorination reaction to produce titanium tetrachloride (TiCl 4 ), is the main process route for the production of titanium tetrachloride. At present, the current chlorination processes for titanium-rich materials at home and abroad mainly include: [0003] ① Molten salt chlorination: This process has lower requirements on the quality of raw materials used, especially the CaO and MgO content indicators can be relaxed a lot. This process ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/02
Inventor 杨守明杨秀山代应洪黄涛鲍满刘义明王大为张勇胡伟谢素龙蒲中云周海荣
Owner SICHUAN HONGDA
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