Rhenium extracting method

A reaction zone and roasting technology, which is applied in the field of extracting rhenium, extracting rhenium from rhenium-containing ore to obtain rhenium-containing extract solution, can solve the problems of large loss of rhenium, low volatilization rate of rhenium, low efficiency of rhenium oxidation and roasting, etc., and achieve improvement Production efficiency, increase rhenium volatilization rate, and improve the effect of oxidation roasting efficiency

Active Publication Date: 2016-01-06
洛阳双罗铼材料科技有限公司
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Problems solved by technology

[0014] The purpose of the present invention is to provide a method for extracting rhenium to solve the problems of low rhenium oxidation roasting efficiency, low rhenium volatilization rate, and large loss of rhenium in the process of dust removal and gas absorption when extracting rhenium in the conventional oxidation roasting method. , the present invention improves the oxidation roasting efficiency and rhenium volatilization rate of rhenium-containing ore by improving the body of the fluidized fluidized furnace

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Embodiment 1

[0049] The method for extracting rhenium of the present invention, technological process such as figure 1 As shown, including the following process steps:

[0050] (1) Oxidation roasting of rhenium-containing ore

[0051] Send the rhenium-containing ore into the fluidized fluidized furnace, and contact with oxygen-containing air for roasting; the specific structure of the fluidized fluidized furnace is as follows: image 3 As shown, the lower part of the fluidized fluidized furnace is provided with a perforated gas distribution partition 9, that is, the furnace bottom. Below the furnace bottom is an air chamber 7 provided with an air inlet pipe 8. The air inlet pipe 8 is connected to the air supply system, and the furnace body 1 is upwards 1.0 along the furnace bottom At a height of ~1.5m, there are respectively a feed inlet 10 and a discharge outlet 3. The feed inlet 10 is slightly higher than the discharge outlet 3. The fluidized furnace body 1 is provided with a mixed reac...

Embodiment 2

[0072] Using rhenium-rich molybdenite as raw material, the rhenium in the mineral is extracted by oxidizing and roasting. The rhenium content of the raw material is 530g / t. The process flow is as follows figure 2 As shown, including the following process steps:

[0073] (1) Oxidation roasting of rhenium-containing ore

[0074] Send the rhenium-containing ore raw materials into the fluidized fluidized furnace, and contact with oxygen-containing air for roasting; the specific structure of the fluidized fluidized furnace is as follows: image 3As shown, the fluidized furnace body 1 is provided with a mixed reaction zone 2 and a second reaction zone, the second reaction zone is higher than the discharge port 3 and is provided with an enlarged diameter section 4 and a reduced diameter section 5 along the furnace body 1 upwards. The diameter ratio between section 4 and mixing reaction zone 2 is 1.4:1. The junction of diameter expanding section 4 and mixing reaction zone 2 is in th...

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Abstract

The invention relates to the technical field of rhenium recycling, in particular to a rhenium extracting method. The proposed rhenium extracting method uses a rhenium-contained ore as a raw material, adopts steps of oxidizing roasting of the rhenium-contained ore, high-temperature dust removal of roasting smoke and rhenium oxide gas absorption to obtain rhenium-contained extracting solution, and realizes safe exhaust of tail gas through a residual gas treatment step. Through improvement of a boiling furnace body and reasonable control of oxidizing roasting, dust removal and gas absorption process conditions, the oxidizing roasting efficiency of the rhenium-contained ore and the rhenium volatilization rate are improved, the roasting dust quantity is reduced, and the production efficiency is improved; a dust removing mode and a gas absorption system are improved to reduce the loss of the rhenium-contained smoke in the dust removal and gas absorption process; the whole recovery rate of extracting rhenium by the oxidizing roasting mode is improved; and the problems of low rhenium oxidizing roasting efficiency and low rhenium volatilization rate in the boiling furnace and high rhenium loss in the dust removal and gas absorption process in the rhenium extraction by a conventional oxidizing roasting mode are solved.

Description

technical field [0001] The invention relates to the technical field of rhenium recovery and utilization, in particular to a method for extracting rhenium, in particular to a method for extracting rhenium from rhenium-containing ore by oxidation and roasting to obtain a rhenium-containing extract. Background technique [0002] The precious metal rhenium and its compounds, due to their special physical and chemical properties, such as electrical conductivity and catalytic activity, are widely used in petrochemical platinum-rhenium reforming catalysts, development of military materials, high-temperature materials and new environmental protection compounds, etc. . [0003] Since there is no independent rhenium deposit in nature itself, rhenium mainly coexists with molybdenum or copper ore, and the supply source of rhenium in the existing market is the by-product obtained from the processing of molybdenum or copper ore. According to the published technology at home and abroad, t...

Claims

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Application Information

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IPC IPC(8): C22B61/00C22B1/02
Inventor 赵维根张基平贾红波
Owner 洛阳双罗铼材料科技有限公司
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