Method for extracting molybdenum, nickel, vanadium and ferrum from polymetallic black-shale paragentic minerals

A technology for black shale and symbiotic ore is applied in the field of extracting molybdenum, nickel, vanadium, and iron, which can solve the problems of generating a large amount of flue gas, few components, and complicated process operations, and achieves the reduction of environmental pollution, the strengthening of metallurgical processes, and the simplicity of the process. Effect

Inactive Publication Date: 2010-06-02
CHONGQING TUOBITUO MOLYBDENUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the total recovery rate of molybdenum and nickel in this inventive method is high, the components obtained after separation are few, and other valuable by-products such as vanadium and iron in the ore are not separated, and the recovery of polymetallic black shale cannot be achieved. The full and effective utilization of the symbiotic ore also has problems such as complex process operation, large consumption of reagents, and high cost
[0007] For the treatment method of the above-mentioned polymetallic black shale paragenetic ore, its disadvantages ar

Method used

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  • Method for extracting molybdenum, nickel, vanadium and ferrum from polymetallic black-shale paragentic minerals
  • Method for extracting molybdenum, nickel, vanadium and ferrum from polymetallic black-shale paragentic minerals

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Embodiment 1

[0031] The composition of polymetallic black shale paragenetic ore is: molybdenum 3.78%, nickel 1.92%, vanadium 0.83%, iron 11.8%, sulfur 21.3%. Add 2T of finely ground polymetallic ore (300 mesh ≥ 90%) and 7T of water into a 10,000L closed reactor, heat the polymetallic black shale symbiotic ore to 200°C, and feed compressed air at a pressure of 2MPa. Under the agitation of high speed (200r / min) in the kettle, the oxidation leaching temperature was controlled at 200°C, and the reaction was carried out for 5 hours. After the reaction, it was filtered to obtain a total of 8.5T of filtrate and washing liquid, and a total of 4.5T of leached wet residue (water content 69%). Composition: molybdenum: 4.63g / L, nickel 3.94g / L, vanadium 1.53g / L, iron 21.8g / L; main components of the leaching slag after drying: molybdenum 2.79%, nickel 0.13%, vanadium 0.12%, iron 1.7 %, during the pressure oxidation leaching process, 95.4% of nickel, about 91% of vanadium, iron and about 50% of molybdenu...

Embodiment 2

[0038] Add 2T of finely ground polymetallic ore (300 mesh ≥ 90%) and 6T of water into a 10,000L closed reactor. The composition of polymetallic black shale paragenetic ore is: molybdenum 7.05%, nickel 3.93%, vanadium 0.73%, iron 13.8%, sulfur 18.7%. Heat the polymetallic black shale symbiotic ore to 250°C, feed compressed air at a pressure of 2.5MPa, control the oxidation leaching temperature to 250°C under stirring at a high speed (200r / min) in the autoclave, and react for 4 hours. Filtrate to obtain a total of 7.6T of filtrate and washing liquid, and a total of 3.5T of leached wet residue (water content 59%). The components of the leachate: molybdenum 11.13g / L, nickel 9.98g / L, vanadium 1.82g / L, iron 34.5g / L The main components of the leaching slag after drying: 3.93% molybdenum, 0.19% nickel, 0.05% vanadium, 0.96% iron, 95.4% nickel, about 95% vanadium, iron and about 50% molybdenum in the process of pressure oxidation leaching After entering the leach solution, the remaini...

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Abstract

The invention discloses a method for extracting molybdenum, nickel, vanadium and ferrum from polymetallic black-shale paragentic minerals, comprising the following steps of: ball-milling the polymetallic black-shale paragentic minerals, and then adding into a pressure kettle for oxygen pressure leaching to obtain leach liquor containing ferrous sulphate, molybdenum trisulfate acyl, vanadic acid and nickel sulfate and leach residues containing molybdic acid sediments; adding ammonia water into the leach liquor to extract the vanadium; then carrying out reextraction to obtain ammonium vanadate; generating sediments containing the molybdenum and the ferrum and a solution containing the nickel; filtering to obtain nickel carbonate; carrying out warming alkaline leach on the leach residues containing the molybdic acid sediments and the sediments containing the molybdenum and the ferrum; filtering to obtain an alkaline leach solution containing the molybdenum and filter residues containing the ferrum; after resin absorbs the molybdenum, eluting, acid-precipitating, filtering, drying and calcining to obtain molybdenum trioxide; and acid-dissolving, reducing and filtering the filter residues containing the ferrum to obtain green vitriol. The invention prevents the pollution of smoke gases, such as sulfur dioxide and the like in environment and has low production cost and high recovery rate of molybdenum, nickel and by-products of the vanadium and the ferrum.

Description

technical field [0001] The invention relates to a method for extracting molybdenum, nickel, vanadium and iron from polymetallic black shale intergrowth ore, and belongs to the technical field of metallurgy and chemical industry. Background technique [0002] At present, there are very rich polymetallic black shale deposits at the junction of Hunan, Chongqing, and Guizhou provinces and cities in my country. The resources are stable, well developed, shallowly buried, and easy to mine. In the Zunyi area alone, there are more than 140 square kilometers of black shale polymetallic mining areas, and the resource metal content is estimated to be about 1 million tons, including 3.5-9% molybdenum, 2-6% nickel, 8-20% phosphorus, and 10% sulfur. -18%, iron 12-15%, carbon 10-12%, vanadium 0.05-1%, uranium 0.05%, as well as precious metals such as tungsten, platinum, rhodium, lead, etc., most of which have industrial development value. The trace element characteristics show that the pol...

Claims

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Application Information

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IPC IPC(8): C22B3/08C22B3/40
CPCY02P10/20
Inventor 尹乔西李建
Owner CHONGQING TUOBITUO MOLYBDENUM IND
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