Mineral processing method for recycling scheelite/molybdenum oxide ores from molybdenum sulfide flotation tailings

A technology for flotation tailings and ore dressing methods, applied in flotation, solid separation, etc., can solve the problems of high energy consumption, long-term action of chemicals, etc., achieve simple process flow, ease the tension of mineral resources, and save resources. Effect

Active Publication Date: 2012-06-13
HUNAN SHIZHUYUAN NON FERROUS METAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the roughing stage of this process takes a long time and consumes a lot of energy, and is only suitab...

Method used

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  • Mineral processing method for recycling scheelite/molybdenum oxide ores from molybdenum sulfide flotation tailings
  • Mineral processing method for recycling scheelite/molybdenum oxide ores from molybdenum sulfide flotation tailings
  • Mineral processing method for recycling scheelite/molybdenum oxide ores from molybdenum sulfide flotation tailings

Examples

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Embodiment 1

[0023] A beneficiation method for recovering scheelite / molybdenum oxide ore from molybdenum sulfide flotation tailings of the present invention includes the following steps:

[0024] (1) Tailings regrinding: The raw material for the ore is the flotation tailings of a molybdenum mine in Henan, containing WO 3 0.18%, Mo0.09%, of which the oxidation rate of molybdenum is 70%, and the tailings fineness is -0.074mm 35.9%; the raw materials are further ground, and the grinding fineness meets -0.074mm 75%;

[0025] (2) Desliming: Gravity separation and desliming of the ore slurry treated in step (1), gravity sedimentation to remove 4% (desliming rate, the same below) of fine mud;

[0026] (3) Scheelite / molybdenum oxide ore flotation: Add 3000g / t of sodium carbonate as regulator to the floating sulfur tailings slurry after step (2) above (that is, add 3000g per ton of slurry, the same below) to make the pH of the slurry reach 9~10, add auxiliary inhibitor ferrous sulfate, inhibitor water gla...

Embodiment 2

[0030] A beneficiation method for recovering scheelite / molybdenum oxide ore from molybdenum sulfide flotation tailings of the present invention includes the following steps:

[0031] (1) Tailings regrind: The raw material for the ore is a molybdenum sulfide flotation tailings, containing WO 3 0.124%, Mo 0.09%, of which the oxidation rate of molybdenum is 68%, and the tailings fineness is -0.074mm 74.61%; the raw materials are further ground, and the grinding fineness meets -0.074mm89%:

[0032] (2) Desliming: Firstly, the ore slurry treated in step (1) is subjected to gravity separation and desliming, and 5.46% of fine sludge is removed by gravity sedimentation, and then No. 2 oil is added for flotation desliming. The addition amount is 80g / t , The desliming rate is 5.03%;

[0033] (3) Desulfurization flotation: using copper sulfate as activator, No. 2 oil as foaming agent, kerosene and butyl xanthate as collectors, flotation to remove sulfide ore in the slurry after step (2); The a...

Embodiment 3

[0038] A beneficiation method for recovering scheelite / molybdenum oxide ore from molybdenum sulfide flotation tailings of the present invention includes the following steps:

[0039] (1) Tailings regrind: The raw material for the ore is a molybdenum sulfide flotation tailings, containing WO 3 0.1%, Mo 0.09%, of which the oxidation rate of molybdenum is 72.63%, the tailings fineness is -0.074mm 70%; the raw materials are further ground, and the grinding fineness meets -0.074mm90%;

[0040] (2) Desliming: Firstly, the ore slurry after the treatment in step (1) is subjected to gravity separation and desliming, and 3% (desliming rate) fine mud is removed by gravity sedimentation;

[0041] (3) Desulfurization flotation: using copper sulfate as activator, No. 2 oil as foaming agent, kerosene and butyl xanthate as collectors, flotation to remove sulfide ore in the slurry after step (2); The addition amounts of these four reagents are 125g / t, 40g / t, 80g / t and 100g / t respectively. After one r...

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Abstract

The invention discloses a mineral processing method for recycling scheelite/molybdenum oxide ores from molybdenum sulfide flotation tailings. The mineral processing method comprises the following steps of: taking the molybdenum sulfide flotation tailings as raw materials and further levigating the raw materials; carrying out reselection and/or flotation and desliming on ore pulp which is levigated according to demands; adding a regulator, an auxiliary inhibitor, an inhibitor and a modified aliphatic acid collecting agent into the flotation tailing pulp; and recycling the scheelite/molybdenum oxide ores at room temperature so as to obtain scheelite/molybdenum oxide ore concentrates after roughing, scavenging and concentrating. The mineral processing method disclosed by the invention has the advantages of simple process flow, low production cost, resource saving, high product level and high recovery.

Description

Technical field [0001] The invention belongs to a secondary recovery method of mineral resources, and particularly relates to a beneficiation method for recovering scheelite / molybdenum oxide ore from flotation tailings. Background technique [0002] Tungsten and molybdenum are two non-renewable strategic mineral resources. Because of their unique properties, they are widely used in steel, military, aerospace, electronics, electrical appliances, and chemical industries. With the development of social economy, the demand for tungsten and molybdenum is increasing, and the resource reserves are drastically reduced. However, there are a large number of poor, fine, and miscellaneous tungsten and molybdenum ore resources in China. Especially for tungsten-molybdenum ore with high oxidation rate, no effective method for recovering tungsten and molybdenum has been found. [0003] Many molybdenum ores have a certain amount of scheelite and molybdenum oxide ores. Among them, molybdenum oxide ...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03B1/00B03D1/018B03D101/06B03D101/02
Inventor 肖松文曾子高赵卫夺潘炳王奉刚
Owner HUNAN SHIZHUYUAN NON FERROUS METAL
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