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Boiling heating method and boiling heating furnace for preparing zirconium tetrachloride

A technology of zirconium tetrachloride and heating method, applied in zirconium halide and other directions, can solve the problems of small production capacity, poor economic benefit and low electric heating efficiency of a single set of devices, and achieve the effects of simple structure, reduced raw material cost and low construction cost

Pending Publication Date: 2022-05-03
SHENYANG XINBO IND TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional preparation methods of zirconium tetrachloride include: using zircon sand as raw material, chlorine gas as chlorination agent, petroleum coke as reducing agent, using fused zirconia method and fixed bed chlorination method for preparation, its disadvantage: it needs continuous Ground frequency induction or medium frequency induction supplies heat source, low electric heating efficiency, high power consumption; single set of equipment has small production capacity and poor economic benefits

Method used

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  • Boiling heating method and boiling heating furnace for preparing zirconium tetrachloride
  • Boiling heating method and boiling heating furnace for preparing zirconium tetrachloride
  • Boiling heating method and boiling heating furnace for preparing zirconium tetrachloride

Examples

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Effect test

Embodiment 1

[0066] A fluidized heating furnace for preparing zirconium tetrachloride, comprising: a fluidized reaction section 1 and a filtration and purification section 2, the fluidized reaction section 1 is located at the lower part of the fluidized heating furnace device, and the filtration and purification section 2 is located at the upper part of the fluidized heating furnace device. The reaction section 1 and the filtration purification section 2 are connected by welding;

[0067] The fluidized reaction section includes: chlorine distributor 1.1, graphite heat-conducting layer 1.2, carbon heating layer 1.3, high-silicon refractory brick 1.4.1 for the first refractory and heat-insulating layer, silicon-aluminum system for the first refractory and heat-insulating layer Refractory castable material 1.4.2, fluidized reaction section furnace shell 1.5, conductive electrode 1.6, feeding pipe 1.7 and slag discharge pipe 1.8;

[0068] The above-mentioned chlorine distributor 1.1 includes: ...

Embodiment 2

[0098] A kind of fluidized heating furnace for preparing zirconium tetrachloride, the schematic diagram of its device structure is shown in figure 1 , including a fluidized reaction section 1 and a filtration and purification section 2, the fluidization reaction section 1 is located at the lower part of the fluidized heating furnace, and the filtration and purification section 2 is located at the upper part of the fluidized heating furnace, and the fluidized reaction section 1 and the filtration and purification section 2 are fixed and sealed by welding.

[0099] Among them, the fluidized reaction section 1 includes a furnace shell 1.5 of the fluidized reaction section, the furnace shell 1.5 of the fluidized reaction section is divided into an upper part and a lower part, and the inner wall of the upper part is provided with a silicon-aluminum series refractory castable material 1.4 of the first refractory heat insulation layer .2, the inner side of the lower part is sequential...

Embodiment 3

[0124] A kind of boiling furnace for preparing zirconium tetrachloride, same as embodiment 1.

[0125] A boiling heating method for preparing zirconium tetrachloride, adopting the boiling heating furnace for preparing zirconium tetrachloride described in embodiment 1, comprises the following steps:

[0126] (1) Send electricity to the boiling heating furnace to bake the furnace, and then start the conductive electrode to keep the temperature in the furnace heated to 790°C;

[0127] (2) According to the ratio, weigh the raw material zircon sand and zirconium carbide, and weigh the carbonaceous reducing agent at the same time, and add it into the fluidized reaction section of the boiling heating furnace through the feeding pipe; according to the mass ratio, zircon sand: zirconium carbide: carbonaceous reducing agent = 72:21:5;

[0128] (3) Continue heating. When the temperature of the material in the furnace reaches 850°C, add preheated chlorine gas into the boiling heating fur...

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Abstract

The invention discloses a boiling heating method and a boiling heating furnace for preparing zirconium tetrachloride, and belongs to the field of zirconium tetrachloride preparation. According to the boiling heating method for preparing zirconium tetrachloride, zircon sand is used as a raw material, zirconium carbide is used as a raw material and a heating agent, chlorine is used as a chlorinating agent and boiling fluidizing air, carbonaceous is used as a reducing agent, and a boiling chlorination method is adopted for preparation. In order to achieve the method, the boiling heating furnace for preparing zirconium tetrachloride is provided and comprises a fluidization reaction section and a filtering and purifying section, the fluidization reaction section is located on the lower portion of the boiling heating furnace, the filtering and purifying section is located on the upper portion of the boiling heating furnace, and the fluidization reaction section and the filtering and purifying section are fixedly and hermetically connected. According to the boiling heating furnace for preparing zirconium tetrachloride, through structural adjustment of the fluidization reaction section and the filtering purification section, uniform fluidization heating is achieved, the filtering efficiency is improved, meanwhile, zirconium carbide is added into raw materials, heat needed by the zircon sand chlorination reaction can be provided, and reducing agent carbon needed by the zircon sand chlorination reaction is supplemented. According to the method, electric energy is saved, and operation cost is reduced.

Description

technical field [0001] The invention belongs to the field of zirconium tetrachloride preparation, in particular to a boiling heating method and a boiling heating furnace for preparing zirconium tetrachloride. Background technique [0002] With the continuous development of science and technology, zirconium has been widely used in nuclear industry, military industry, chemical industry, electronics and other industries, and the demand for zirconium products in domestic and foreign markets is increasing day by day. Zirconium tetrachloride is an important intermediate product for the production of zirconium products such as zirconia and sponge zirconium, and its preparation technology has also become the focus of attention of scientific and technological personnel in this field. [0003] The traditional preparation methods of zirconium tetrachloride include: using zircon sand as raw material, chlorine gas as chlorination agent, petroleum coke as reducing agent, using fused zirco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G25/04
CPCC01G25/04C01P2006/80
Inventor 张清刘鹤群张伟羊建张小冀王新军刘海滨
Owner SHENYANG XINBO IND TECH
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