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Method for recycling rare metal molybdenum from mineral dressing tailings of molybdenum

A technology for metal elements and tailings, applied in the field of recycling rare metal element molybdenum, to achieve the effect of high resource recovery rate, low cost, and simple extraction process operation

Inactive Publication Date: 2012-08-22
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the process of recovering molybdenum element from molybdenum tailings by alkali leaching agent in China has been invented in the technical field, there is no patent for recovering molybdenum element by roasting and alkali leaching using low-grade molybdenum tailings in Luanchuan as raw material. Wet chemical recovery of molybdenum tailings is a new process

Method used

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  • Method for recycling rare metal molybdenum from mineral dressing tailings of molybdenum
  • Method for recycling rare metal molybdenum from mineral dressing tailings of molybdenum
  • Method for recycling rare metal molybdenum from mineral dressing tailings of molybdenum

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Embodiment 1

[0023] The main components are Si 22.79wt.%, Ca 16.21wt.%, Fe 9.11wt.%, Mg 8.87wt.%, Al 1.28wt.%, S 1.41%, Mn 0.52wt.%, Mo 0.14wt.% , O 39.53% molybdenum beneficiation tailings are passed through a 60-mesh sieve, and the sieve feed is put into a ball mill tank for ball milling for 10 minutes, then the vibrating sieve machine is passed through a 180-mesh sieve, and the sieve feed is taken. The sieved molybdenum beneficiation tailings are put into a rapid heating box-type electric furnace for roasting, and kept at 620° C. for 3 hours to obtain roasted powder. Mix 10wt.% sodium carbonate solution with calcined powder at a liquid-solid ratio of 4:1, stir, then react in a water bath at 80°C for 3 hours, filter and wash to obtain leachate and filter residue. The concentration of molybdenum element in the leachate can be obtained by analyzing the leaching solution with an ICP emission spectrometer, and the leaching extraction rate of the molybdenum element can be finally calculated. ...

Embodiment 2

[0026] The main components are Si 22.79wt.%, Ca 16.21wt.%, Fe 9.11wt.%, Mg 8.87wt.%, Al 1.28wt.%, S 1.41%, Mn 0.52wt.%, Mo 0.14wt.% , O 39.53% molybdenum beneficiation tailings are passed through a 60-mesh sieve, and the sieve feed is put into a ball mill tank for ball milling for 10 minutes, then the vibrating sieve machine is passed through a 180-mesh sieve, and the sieve feed is taken. The sieved molybdenum beneficiation tailings are put into a rapid heating box-type electric furnace for roasting, and kept at 620° C. for 3 hours to obtain roasted powder. Mix 10wt.% sodium carbonate solution with the calcined powder at a liquid-solid ratio of 6:1, stir, then react in a water bath at 80°C for 3 hours, filter, and wash to obtain leachate and filter residue. The concentration of molybdenum element in the leachate can be obtained by analyzing the leaching solution with an ICP emission spectrometer, and the leaching extraction rate of the molybdenum element can be finally calcula...

Embodiment 3

[0029] The main components are Si 22.79wt.%, Ca 16.21wt.%, Fe 9.11wt.%, Mg 8.87wt.%, Al 1.28wt.%, S 1.41%, Mn 0.52wt.%, Mo 0.14wt.% , O 39.53% molybdenum beneficiation tailings are passed through a 60-mesh sieve, and the sieve feed is put into a ball mill tank for ball milling for 10 minutes, then the vibrating sieve machine is passed through a 180-mesh sieve, and the sieve feed is taken. The sieved molybdenum beneficiation tailings are put into a rapid heating box-type electric furnace for roasting, and kept at 620° C. for 3 hours to obtain roasted powder. Mix 10wt.% sodium carbonate solution with the calcined powder at a liquid-solid ratio of 4:1, stir, then react in a water bath at 90°C for 3 hours, filter, and wash to obtain leachate and filter residue. The concentration of molybdenum element in the leachate can be obtained by analyzing the leaching solution with an ICP emission spectrometer, and the leaching extraction rate of the molybdenum element can be finally calcula...

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Abstract

The invention provides a method for recycling rare metal molybdenum from mineral dressing tailings of molybdenum, which belongs to the technical fields of comprehensive utilization of mine tailings and hydrometallurgy. The method mainly comprises the following steps: pulverizing tailings, ball milling, calcining, heating together with a sodium carbonate solution, stirring, filtering, and washing to finally obtain the lixivium and filter residues. In the invention, the rare metal molybdenum is recycled from low-grade mineral dressing tailings of molybdenum and the extraction process is simple operated, high resource recovery rate is high and the feasibility is strong, and the lixiviation recovery efficiency of the rare metal molybdenum from the mineral dressing tailings of molybdenum is more than 85 wt%; environment-polluting volatile chemicals are not used, and the generated waste water and waste liquor can be easily recycled, the environmental pollution is less; and after extracting and recycling molybdenum, various other valuable metals can also be recycled.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization of mine tailings and hydrometallurgy, and provides a method for recovering molybdenum, a rare metal element, from molybdenum beneficiation tailings. Background technique [0002] Mineral resources are a kind of non-renewable resources. With the increasing demand for mineral resources in social development and people's continuous development of mineral resources, mineral resources are increasingly depleted. At the same time, the harm to the environment caused by the simple accumulation and backfilling of tailings has made people realize the significance of the recycling and reuse of tailings resources to the sustainable development of society and economy. A large number of facts show that mine tailings, as a secondary resource, must be comprehensively utilized no matter from the needs of social development or from the perspective of environmental protection. [0003] Molybdenum b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/02C22B3/04C22B34/34
CPCY02P10/20
Inventor 徐利华任玲玲秦红彬张作顺关红艳
Owner UNIV OF SCI & TECH BEIJING
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