Beneficiation method and system for calcium or calcareous and siliceous phosphorite and application method of beneficiation system

A beneficiation method and phosphate rock technology are applied in the directions of chemical instruments and methods, wet separation, and process efficiency improvement, etc., and can solve the problems of low particle size of mineral apatite embedded, difficult monomer dissociation, and high beneficiation cost. Achieve significant energy-saving effect, high heat transfer speed and high equipment efficiency.

Inactive Publication Date: 2017-05-17
SICHUAN JIUCHANG SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main impurities of carbonate-type phosphate rock include organic matter, siliceous matter, dolomite, calcite, and ferroaluminum, and the useful mineral apatite has a low embedded particle size and difficult monomer dissociation. Traditional flotation enrichment method, the recovery rate of phosphorus is low, and the cost of beneficiation is high

Method used

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  • Beneficiation method and system for calcium or calcareous and siliceous phosphorite and application method of beneficiation system
  • Beneficiation method and system for calcium or calcareous and siliceous phosphorite and application method of beneficiation system
  • Beneficiation method and system for calcium or calcareous and siliceous phosphorite and application method of beneficiation system

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Embodiment 1

[0079] a kind of like image 3 The beneficiation system for calcium or calcium-siliceous low-magnesium phosphate rock of the present invention shown in the present invention includes a fluidized roasting system, a tail gas purification system and a digestion and separation system; the fluidized roasting system includes fluidized roasting and decomposition Furnace 1, feeding assembly, suspension preheating assembly, gas supply assembly and combustion assembly; fluidized roasting and decomposition furnace 1 includes a furnace body 111, and the lower part of the furnace body 111 is provided with an air inlet 112 and a feed inlet 113 The air inlet 112 is connected with the combustion assembly, the gas supply assembly is connected with the combustion assembly, and the feed port 113 is connected with the discharge port of the suspension preheating assembly; 114 communicates with the air inlet of the suspension preheating assembly; the air outlet of the suspension preheating assembly...

Embodiment 2

[0093] a kind of like Figure 5 Shown is a beneficiation system for calcium or calcium siliceous phosphate rock containing high magnesium of the present invention, which includes a fluidized roasting system, a tail gas purification system, a digestion and separation system, and a carbonization pyrolysis system.

[0094] The fluidized roasting system in this embodiment includes a fluidized roasting and calcining furnace 1, a feed assembly, a suspension preheating assembly, an air supply assembly and a combustion assembly; the fluidized roasting and calcining furnace 1 includes a furnace body 111 , the lower part of the furnace body 111 is provided with an air inlet 112 and a feed port 113; the air inlet 112 is connected with the combustion assembly, the air supply assembly is connected with the combustion assembly, and the feed port 113 is connected with the discharge port of the suspension preheating assembly The upper part of the furnace body 111 is provided with an air outle...

Embodiment 3

[0115] a kind of like Figure 7 Shown is a beneficiation system for calcium or calcium siliceous phosphate rock containing high magnesium of the present invention, which includes a fluidized roasting system, a tail gas purification system, a digestion and separation system, and a carbonization pyrolysis system.

[0116] The fluidized roasting system in this embodiment includes a fluidized roasting and calcining furnace 1, a feed assembly, a suspension preheating assembly, an air supply assembly and a combustion assembly; the fluidized roasting and calcining furnace 1 includes a furnace body 111 , the lower part of the furnace body 111 is provided with an air inlet 112 and a feed port 113; the air inlet 112 is connected with the combustion assembly, the air supply assembly is connected with the combustion assembly, and the feed port 113 is connected with the discharge port of the suspension preheating assembly The upper part of the furnace body 111 is provided with an air outle...

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Abstract

The invention discloses a beneficiation method for extracting phosphorus, reducing calcium and recovering magnesium for calcareous or calcareous and siliceous phosphorite containing high magnesium or low magnesium. The beneficiation method includes the steps that the phosphorite is subjected to multi-stage heat treatment and is then subjected to fluidized roasting, water is added to obtained phosphorite roasting powder for stirring, and sizing is obtained after digestive treatment; the sizing is separated to obtain underflow and overflow, and phosphorus concentrates and filter liquid are obtained after the underflow is filtered; and when the phosphorite contains high magnesium, the filter liquid is merged with the overflow, then carbonization pyrolysis treatment is conducted, and magnesium is recovered. The invention further discloses a beneficiation system which comprises a fluidized roasting system, a tail gas purifying system and a digestion separation system. The fluidized roasting system comprises a fluidized roasting decomposing furnace, a feeding assembly, a suspension preheating assembly, a gas supplying assembly and a combustion assembly; and the beneficiation system further comprises a carbonization pyrolysis system when being used for the high-magnesium phosphorite. The beneficiation system can be adopted for conducting treatment such as suspension preheating, fluidized roasting decomposing, digestion separation and carbonization pyrolysis. The beneficiation method and the beneficiation system have the beneficial effects of being high in efficiency, environment-friendly, capable of saving energy, high in valuable metal recovery rate and the like.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a beneficiation method, a beneficiation system and a use method for increasing phosphorus and reducing calcium and magnesium from phosphate rock. Background technique [0002] Phosphate rock is an important mineral resource, mainly used in the production of phosphoric acid, phosphate fertilizer and phosphate products. With the reduction of rich ore and easy dressing, the development and utilization of refractory carbonate phosphate rock is becoming more and more important. The main impurities of carbonate-type phosphate rock include organic matter, siliceous matter, dolomite, calcite, and ferroaluminum, and the useful mineral apatite has a low embedded particle size and difficult monomer dissociation. Traditional flotation enrichment method, the recovery rate of phosphorus is low, and the cost of beneficiation is high. [0003] As my country's phosphate r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B9/00B03B7/00C22B1/10C22B26/22
CPCB03B7/00B03B9/00C22B1/10C22B26/22Y02P10/20
Inventor 侯拥和雷圣辉刘诗华魏世发史明王佳宾魏琛娟李静吴鋆汤美林宁伟尹柏桥陈浩东廖栩枫
Owner SICHUAN JIUCHANG SCI & TECH
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