Method for recycling high-phosphorus/sulfur siderite resource

A technology of resource recovery and raw ore, which is applied in the direction of chemical instruments and methods, wet separation, solid separation, etc., can solve the problems that the product quality is difficult to meet the production requirements, the mineral resources cannot be fully utilized, and the content of harmful impurities is low. Difficulty, ease the tight supply and demand of iron ore resources, and improve the effect of concentrate iron grade

Inactive Publication Date: 2012-06-27
KUNMING UNIV OF SCI & TECH
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Problems solved by technology

[0007] Application No. 201010272435.3 "Development and Utilization Method of Siderite" promotes sulfur to be discharged into the air in the form of gas under a strong oxidizing atmosphere to achieve sulfur removal and obtain high-grade iron ore concentrate, but this process has environmental pollution serious problem
[0008] At present, the method of magnetization roasting-magnetic separation is mainly used in China to process siderite with relatively simple mineral components and low content of harmful impurities. If these processes are used to process siderite containing high phosphorus and high sulfur, the product quality will be difficult. Meet the requirements of production and cannot make full use of such mineral resources

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  • Method for recycling high-phosphorus/sulfur siderite resource

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Embodiment 1

[0027] Embodiment 1: the method for this high-phosphorus siderite resource recycling, specific content is as follows:

[0028] In this embodiment, the raw ore is iron grade 30.76%, phosphorus-containing 1.05%, and sulfur-containing siderite ore of 1.38%. Phosphorus exists in the form of collophanite, and sulfur exists in the form of pyrite. The specific operations are as follows:

[0029] 1. Grinding 1 ton of raw ore to -45μm particle size accounts for 92% of the ore weight percentage;

[0030] 2. Adjust the pH value of the ground slurry obtained in step 1 to 7.5, add 100 grams of butyl xanthate, 60 grams of terpineol oil foaming agent, carry out reverse flotation desulfurization, and collect sulfur-containing foam;

[0031] 3. Adjust the pH value of the underflow pulp of reverse flotation desulfurization in step 2 to 10, add 150 grams / ton of raw ore oleic acid collector, carry out reverse flotation roughing dephosphorization, and collect phosphorus-containing foam 1; Add 200...

Embodiment 2

[0034] Embodiment 2: the method for this high-phosphorus siderite resource recycling, specific content is as follows:

[0035] In the present embodiment, the raw ore is iron grade 28.65%, containing 0.95% phosphorus, siderite ore containing 1.30% sulfur, phosphorus exists in the form of apatite, and sulfur exists in the form of pyrite. The specific operations are as follows:

[0036] 1. Grinding 1 ton of raw ore to -45μm particle size accounts for 94% of the ore weight percentage;

[0037] 2. Adjust the pH value of the ground slurry obtained in step 1 to 8, add 100 grams of isoamyl xanthate, 50 grams of foaming agent with a commercial code of 730, carry out reverse flotation desulfurization, and collect sulfur-containing foam;

[0038] 3. Adjust the pH value of the underflow pulp of reverse flotation desulfurization in step 2 to 9, add 100 grams of oxidized paraffin soap collector, carry out reverse flotation roughing dephosphorization, and collect phosphorus-containing foam 1...

Embodiment 3

[0041] Embodiment 3: the method for this high-phosphorus siderite resource recycling, specific content is as follows:

[0042] In this embodiment, the raw ore is siderite ore with an iron grade of 31.16%, a phosphorus content of 1.08%, and a sulfur content of 1.25%. Phosphorus exists in the form of collophanite, and sulfur exists in the form of pyrrhotite and pyrite. The operation is as follows:

[0043] 1. Grinding 1 ton of raw ore to -45μm particle size accounts for 95% of the ore weight percentage;

[0044] 2. Adjust the pH value of the ground slurry obtained in step 1 to 9, add 80 grams of isopropyl xanthate, and 50 grams of No. 2 oil foaming agent, carry out reverse flotation desulfurization, and collect sulfur-containing foam;

[0045] 3. Adjust the pH value of the underflow pulp of reverse flotation desulfurization in step 2 to 11, add 150 g / t of raw ore Tal oil collector, carry out reverse flotation roughing dephosphorization, and collect phosphorus-containing foam 1;...

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Abstract

The invention discloses a method for recycling high-phosphorus / sulfur siderite resources. The method comprises the following steps: finely grinding the raw ore, and removing phosphorus and sulfur by asynchronous reverse flotation, to obtain low-phosphorus / sulfur crude concentrate; subjecting the crude concentrate to reduction roasting in a roasting furnace while adding sodium carbonate, to obtain reduced roasted ore; and performing magnetic flocculation-enhanced separation. The process can not only increase the concentrate grade but also effectively improve recovery of magnetic minerals at fine-particle level and micro-fine-particle level and achieve advanced removal of phosphorus and sulfur from the roasted ore, greatly increases the recycling rate of a great amount of refractory high-phosphorus / sulfur siderite resources, and produces iron concentrate having iron grade of more than 65%, iron recovery rate of more than 65%, phosphorus content of less than 0.20% and sulfur content of less than 0.3%.

Description

technical field [0001] The invention relates to a method for recycling iron resources from siderite resources containing high phosphorus and high sulfur, and belongs to the technical field of ore dressing and metallurgy. Background technique [0002] Siderite is a traditional iron ore resource, but due to its low iron grade and unique properties, this iron ore resource has not been widely used. At present, some siderite resources with relatively simple mineral composition and low content of harmful impurities have begun to be utilized, while most of the siderite resources containing high phosphorus and sulfur are basically sluggish and refractory mineral resources. The recovery and utilization of high phosphorus sulfur siderite resources has always been a technical problem that has not been fundamentally solved in the field of mineral processing, and it is also a hot research topic. [0003] High phosphorus sulfur siderite mainly occurs in sedimentary and partial contact me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00
Inventor 文书明柏少军刘殿文张文彬丁跃华章晓林
Owner KUNMING UNIV OF SCI & TECH
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