Singleness siderite full flotation mineral separation method

Abstract

The invention relates to a single siderite all-flotation mineral separation method, belonging to the technical field of iron ore separation of mineral processing engineering, which adopts all-flotation technological process to process the single siderite ore with small amount of hematite-limonite, magnetic pyrite, pyrite and other ores. The processing method comprises the following steps: (1) the material is crushed below 3mm, mixed evenly and ground with liquid-solid weight ratio 1:2 and 75% to 95% of particle size of 0.074 mm, and (2) one roughing and triple cleaning are processed and the siderite concentrate ore with grade TFe larger than or equal to 38% and 75 to 86% of the iron recovery is acquired. The single siderite all-flotation mineral separation method has the advantages of adopting the siderite collecting agent for collecting, enabling the strong physico-chemical adsorption between the siderite surface and the collecting agent surface, and realizing the effective separation of the siderite and other ores.

Description

1. Technical field: [0001] The invention relates to a single siderite full flotation beneficiation method, which belongs to the technical field of iron ore beneficiation in mineral processing engineering, and is especially suitable for siderite as the main part, accompanied by red limonite, pyrrhotite and pyrrhotite. Mineral processing methods such as ore. 2. Background technology: [0002] Among the proven iron ore reserves, siderite (including single siderite, hematite, limonite, siderite and other symbiosis) accounts for less than 10% of the world's reserves, but some predictions show that, Among the potential resources of iron ore in the world, siderite accounts for more than 40%. my country's siderite resources are relatively rich, and its reserves rank among the top in the world, with a total of about 1.834 billion tons. Due to the fine particle size, complex composition and low grade of siderite, iron mainly exists in the form of carbonate, and part of siderite is c...

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Problems solved by technology

So far, there is no single practice of siderite industrial utilization at home and abroad. Even if Daye Iron Mine and Jiuzhou Iron and Steel Mine can comprehensively recover part of the associated siderite in the iron ore sorting process, only iron-containing iron ore can be obtained. Around 35% siderite concentrate

[0003] Siderite belongs to the type of carbonate minerals, and its iron grade improves relatively greatly after roasting. Although the roasting process of siderite can obtain iron concentrate with higher iron grade, it will bring about two roastings (one magnetization roasting, The cost of one-time sintering) is very high. If the iron grade is enriched to about 39% by conventional physical beneficiation methods, the iron grade of the product can be increased to about 55% after pellet sintering, which can reduce the cost of one-time roasting. The resulting roasting cost will increase the corresponding economic benefits; the same high power consumption and water consumption brought by the strong magnetic separation process will be large, and the cost will be relatively high, and it will be difficult to achieve actual industrialization

At present, there is no actual successful experience in the full flotation process of siderite, which is mainly affected by the difficult selection of siderite flotation collectors

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