Phosphorus removal process for apatite ore
A technique for apatite and impurity reduction, applied in flotation, solid separation, chemical instruments and methods, etc., can solve problems such as high S content and MgO content, difficulty in beneficiation of phosphorous concentrate, etc., and achieve high quality and simple process Effect
Active Publication Date: 2020-12-25
MCC NORTH (DALIAN) ENG TECH CO LTD
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Problems solved by technology
[0004] Through the above analysis, it can be known that most of the existing apatite ores in my country are P 2 o 5 Low, high S content and MgO content, which brings great difficulty to the beneficiation of qualified quality phosphorus concentrate
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[0021] In order to further illustrate the technical means and effects of the present invention to solve the technical problems, the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but it is not intended to limit the scope of protection required by the present invention.
[0022] Such as figure 1 The process shown in the optional embodiment of the apatite ore phosphorus reduction process includes three stages of crushing process S1001, the first stage of ball milling S1002 and fine sieve S1003 closed circuit, coarse mica extraction flotation S1004, the second stage of ball milling S1006 and rotary Flow device S1005 closed circuit, strong magnetic roughing S1007, strong magnetic sweeping S1008, desliming cyclone S1009, fine mica extraction flotation S1010, desulfurization reverse flotation S1100 and phosphorus flotation S1200;
[0023] The main gangue minerals in the raw ore are sulfur-containing...
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The invention belongs to the technical field of mine separation and provides an impurity reducing phosphorus separation process for an apatite mine. The impurity reducing phosphorus separation processfor the apatite mine comprises a three-segment breaking working procedure, a first-segment ball-milling and undersize sieving closed cycle, coarse mica disengaging flotation, a second-segment ball-milling and hydrocyclone closed cycle, strong-magnetism roughing, strong-magnetism scavenging, a desliming hydrocyclone, a fine mica disengaging flotation, desulfuration reverse flotation and phosphorusflotation. According to the process, magnesium contained mica in mineral is disengaged through coarse mica disengaging flotation and fine mica disengaging flotation, sulfur in the mineral is disengaged out through magnetic separation and desulfuration reverse flotation, the content of magnesium oxide and sulfur in the phosphorus concentrate is reduced, the quality of the phosphorus concentrate can be effectively improved, and after the apatite mine is treated through the process, the phosphorus concentrate relatively good in quality can be acquired.
Description
technical field [0001] The invention belongs to the technical field of ore dressing, and in particular relates to a phosphorus removal process for apatite ore. Background technique [0002] my country is the country with the largest demand for phosphate fertilizers, and phosphate fertilizers and phosphorus chemicals occupy an important position in my country's agricultural and chemical industries. Apatite, as one of the phosphorus-containing minerals, occupies a major position in the source of phosphorus. [0003] At present, the phosphorus-rich mines of phosphorus minerals in my country are decreasing day by day, and most of the remaining ones are poor phosphorus mines. Many apatite mines in my country are characterized by low phosphorus, high sulfur, and high magnesium. Most of the apatite mines contain P 2 o 5 The content of sulfur is less than 10%, and the sulfur content is between 2% and 4%. Sulfur mainly exists in the form of pyrrhotite, pyrite and chalcopyrite; MgO...
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IPC IPC(8): B03B7/00B03B9/00B03D1/002B03D1/008B03D101/02B03D101/04B03D103/06
CPCB03B7/00B03B9/00B03D1/002B03D1/008B03D2201/007B03D2201/02B03D2201/04B03D2203/06
Inventor 李国洲段云峰邢伟
Owner MCC NORTH (DALIAN) ENG TECH CO LTD