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Method for preparing molybdenum metal product by short process of molybdenum concentrate

A molybdenum concentrate and short-process technology is applied in the field of molybdenum concentrate short-process preparation of molybdenum metal products, which can solve the problems of low product and use yield, high cost, high pollution, etc., and achieve low production cost and high raw material utilization rate. High, short process effect

Active Publication Date: 2022-07-26
ZHENGZHOU UNIV
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Problems solved by technology

The aluminothermic smelting of ferromolybdenum is a high energy consumption and high pollution industry, with long process, low yield of products and use, and high cost

Method used

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  • Method for preparing molybdenum metal product by short process of molybdenum concentrate

Examples

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Embodiment 1

[0057] figure 1 It is a schematic diagram of the device for preparing molybdenum metal products in the short process of molybdenum concentrate disclosed in Example 1.

[0058] The short-flow preparation device for molybdenum concentrate disclosed in Example 1 is used to realize the short-flow preparation of molybdenum concentrate to prepare molybdenum metal products. It includes a reactor 1 for setting molybdenum concentrate raw materials and molybdenum trioxide raw materials. A material feeding port 11 is arranged above the reactor 1. The material feeding port 11 is provided with a sealable cover for sealing it. The concentrate and molybdenum trioxide can enter the reactor 1 from the material feeding port 11 for reaction; the upper side of the reactor 1 is provided with a sulfur dioxide gas outlet, which is communicated with the replacement furnace through a communication pipe, and the replacement furnace is used to set the carbonaceous reducing agent. , the produced sulfur ...

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Abstract

The method for preparing molybdenum metal products in a short process of molybdenum concentrate specifically includes: mixing molybdenum concentrate raw materials and molybdenum trioxide raw materials in proportion, and reacting at a first temperature to generate high-concentration sulfur dioxide and molybdenum dioxide products; the generated molybdenum dioxide The product reacts with the oxygen-containing gas at the second temperature to generate a molybdenum trioxide product; or, the generated molybdenum dioxide product is treated with hydrogen; wherein, the first temperature is set at 550-850 ° C, and the second temperature is set at 500 °C ~800°C. The method for preparing molybdenum metal products in a short process of molybdenum concentrate can obtain various molybdenum metal products such as molybdenum dioxide, molybdenum trioxide, metal molybdenum, etc. The process is short, energy consumption is low, raw material utilization rate is high, overall production cost is low, and no It produces environmental pollution, is environmentally friendly, and has good application prospects, considerable economic and social benefits.

Description

technical field [0001] The application belongs to the technical field of sulfide treatment, and in particular relates to a method for preparing molybdenum metal products in a short process of molybdenum concentrate. Background technique [0002] Conventional molybdenum concentrate processing requires roasting to produce commercial molybdenum oxide and low concentrations of sulfur dioxide. The low-concentration sulfur dioxide flue gas is prepared into sulfuric acid through an acid-making process, and industrial MoO 3 It can be directly produced into ferromolybdenum by aluminothermic reaction, or it can be further processed by hydrometallurgy to generate ammonium molybdate solution in the process of pickling and ammonia leaching. The process produces ammonium molybdate, after which high-purity MoO is collected after roasting and decomposing 3 , and finally obtain the final product molybdenum powder through two-stage reduction. There are also manufacturers who add lime to ab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B34/34
CPCC22B34/34
Inventor 孙院军车玉思张石明宋建勋张超何季麟
Owner ZHENGZHOU UNIV
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