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Oxygen-enriched production process of catalyst-grade antimony trioxide

An antimony trioxide and production process technology, applied in the directions of antimony oxide/antimony hydroxide/antimony oxyacid, inorganic chemistry, antimony compounds, etc., can solve the problems of high fuel consumption and low heat utilization rate, etc.

Active Publication Date: 2021-06-08
广西华远金属化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the disadvantages of using ordinary air and anthracite as fuel in the prior art, low heat utilization rate, ash pollution products, low concentration sulfur in the flue gas entering the flue gas, forming air pollutants, and high fuel consumption, the invention provides a catalyst level three The oxygen-enriched production process of antimony oxide uses clean fuel natural gas instead of traditional coke, coal or anthracite as production fuel, reduces energy consumption, improves yield and recovery rate of antimony trioxide, reduces impurity content in products, and improves product whiteness. degree and other product indicators

Method used

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  • Oxygen-enriched production process of catalyst-grade antimony trioxide

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The oxygen-enriched production process of catalyst grade antimony trioxide comprises the following steps:

[0022] 1) Using natural gas as fuel, blowing oxygen-enriched air with 35% oxygen content into the combustion system as a combustion aid to supply heat to the antimony white furnace, the pressure of the oxygen-enriched air with 35% oxygen content is controlled at 10kPa, and the flow rate is 110m 3 / min, the temperature in the reaction zone of the antimony white furnace is raised to 700°C;

[0023] 2) When the temperature in the furnace reaction zone of the antimony white furnace rises to 700°C, put high-purity antimony with an antimony content of more than 99.9% into the furnace reaction zone of the antimony white furnace to melt it, and spray 35% oxygen content on the surface of the antimony liquid Oxygen-enriched air, the pressure of oxygen-enriched air with 35% oxygen content is controlled at 10kPa, and the flow rate is 80m 3 / min, make the antimony oxidation v...

Embodiment 2

[0027] The oxygen-enriched production process of catalyst grade antimony trioxide comprises the following steps:

[0028] 1) Using natural gas as fuel, blowing oxygen-enriched air with 25% oxygen content into the combustion system as a combustion aid to supply heat to the antimony white furnace, the pressure of the oxygen-enriched air with 25% oxygen content is controlled at 15kPa, and the flow rate is 120m 3 / min, the temperature in the reaction zone of the antimony white furnace is raised to 710°C;

[0029] 2) When the temperature in the furnace reaction zone of the antimony white furnace rises to 710°C, put high-purity antimony with an antimony content of more than 99.9% into the furnace reaction zone of the antimony white furnace to melt it, and spray 25% oxygen on the surface of the antimony liquid Oxygen-enriched air, the pressure of oxygen-enriched air with 25% oxygen content is controlled at 15kPa, and the flow rate is 20m 3 / min, make the antimony oxidation volatiliz...

Embodiment 3

[0033] The oxygen-enriched production process of catalyst grade antimony trioxide comprises the following steps:

[0034] 1) Using natural gas as fuel, blowing oxygen-enriched air with 30% oxygen content into the combustion system as a combustion aid to supply heat to the antimony white furnace, the pressure of the oxygen-enriched air with 30% oxygen content is controlled at 12kPa, and the flow rate is 130m 3 / min, the temperature in the reaction zone of the antimony white furnace is raised to 705°C;

[0035] 2) When the temperature in the furnace reaction zone of the antimony white furnace rises to 705°C, put high-purity antimony with an antimony content of more than 99.9% into the furnace reaction zone of the antimony white furnace to melt it, and spray 30% oxygen content on the surface of the antimony liquid Oxygen-enriched air, the pressure of oxygen-enriched air with 30% oxygen content is controlled at 12kPa, and the flow rate is 60m 3 / min, make the antimony oxidation v...

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Abstract

The invention discloses an oxygen-enriched production process of catalyst-grade antimony trioxide. The process comprises the following steps: taking natural gas as fuel and oxygen-enriched air as a combustion improver, supplying heat to an antimony white furnace through a combustion system, after the temperature rises to 700 DEG C, putting high-purity antimony into the furnace to be melted, and spraying oxidized oxygen-enriched air to the surface of antimony liquid to oxidize and volatilize the antimony; and supplying part of heat through heating to increase the temperature in a hearth reaction area to 1100 DEG C or above, at an outlet of a reaction chamber, enabling high-temperature antimony trioxide flue gas to pass through a flue gas quenching system, quenching the high-temperature antimony trioxide flue gas to 60-300 DEG C in the presence of air, and collecting the obtained product by using a cloth bag dust collection system so as to obtain the catalyst-grade antimony trioxide product with a full cubic crystal form, high purity and high whiteness. The clean fuel natural gas is used as production fuel for replacing traditional coke, fire coal or anthracite, energy consumption is reduced, the yield and recovery rate of antimony trioxide are increased, the impurity content in the product is reduced, and the whiteness of the product and other product indexes are improved.

Description

【Technical field】 [0001] The invention relates to the technical field of chemical industry and metallurgy, in particular to an oxygen-enriched production process of catalyst-grade antimony trioxide. 【Background technique】 [0002] my country is the world's largest antimony resource country, producer and exporter, and its output accounts for about 80% of the world's total. China's antimony reserves account for more than 60% of the world's total, and Guangxi's antimony reserves account for about 45% of China's. Antimony ore resources are divided into two categories: 1. Brittle sulfur-lead-antimony ore (the main components are Pb, Sb, Ag, accounting for about 20% of antimony resources), and the ore sources are mainly concentrated in Hechi, Guangxi; 2. Single antimony ore (the main component is Sb , including antimony sulfide ore, antimony oxide ore and mixed antimony ore, accounting for about 80% of antimony resources), the ore sources are mainly distributed in Hunan, Guangxi, ...

Claims

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Application Information

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IPC IPC(8): C01G30/00
CPCC01G30/005C01P2004/52C01P2004/61C01P2004/62C01P2006/80C01P2006/65C01P2002/30
Inventor 庞洲杨世干吴宝育莫兴德郭鼎
Owner 广西华远金属化工有限公司
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