Singleness siderite full flotation mineral separation method

A beneficiation method, siderite technology, applied in mineral beneficiation, mineral processing engineering iron ore beneficiation field, can solve the problems of high cost, difficult to realize industrialization, large power consumption and water consumption, etc., and achieve effective separation Effect

Inactive Publication Date: 2008-09-17
KUNMING UNIV OF SCI & TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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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 enri...

Method used

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  • Singleness siderite full flotation mineral separation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: The siderite sample comes from a certain area in Yunnan. The sulfur, phosphorus and arsenic in the siderite raw ore do not exceed the standard. The main recovered element in the ore is iron, and the other elements do not reach the value of comprehensive recovery. The mineral content of the raw ore is shown in Table 1, and the chemical composition analysis of the raw ore is shown in Table 2. use figure 1 According to the full flotation process, the siderite is crushed to below -3mm, mixed evenly, and added to the ball mill for grinding according to the ratio of liquid to solid ratio = 1:2. The grinding particle size is -0.074mm, accounting for 85.38%. The flotation agent System: (1) Siderite roughing: sodium hexametaphosphate 300g / t, stirring for 4 minutes, sulfuric acid to adjust pH=5-6, stirring for 4 minutes, SP collector 600g / t, stirring for 3 minutes, starch 600g / t, stirring 3min, 2 # Stir 40g / t oil for 3min, inflate and scrape bubbles (2) Siderite s...

Embodiment 2

[0024] Embodiment 2: The siderite sample comes from a certain area in Yunnan. The sulfur, phosphorus and arsenic in the siderite raw ore do not exceed the standard. The main element recovered in the ore is iron, and other elements do not reach the value of comprehensive recovery. The mineral content of the raw ore is shown in Table 4, and the chemical composition analysis of the raw ore is shown in Table 5. use figure 1 The full flotation process flow, the grinding particle size is -0.074mm, accounting for 88.78%. Collector 700g / t, starch 600g / t, 2 # Oil 40g / t aerated and scraped (2) Siderite selection I: starch 400g / t, 2 #Oil 20g / t is aerated and foamed (3) Siderite selection II: adjust pH to 5-6 with sulfuric acid, starch 200g / t, 2 # Oil 15g / t, aerated and foamed (4) Sidetie Selection III: Sulfuric acid to adjust pH=5~6, starch 200g / t,, 2 # Oil 6g / t, aerated and scraped. The indicators are shown in Table 6.

[0025] Table 4 Raw ore mineral content

[0026] mi...

Embodiment 3

[0031] Embodiment 3: The siderite sample comes from a certain area in Gansu. The sulfur, phosphorus and arsenic in the siderite raw ore do not exceed the standard. The main recovered element in the ore is iron, and the other elements do not reach the value of comprehensive recovery. The mineral content of the raw ore is shown in Table 7, and the chemical composition analysis of the raw ore is shown in Table 8. use figure 1 Advanced full flotation process, grinding particle size -0.074mm accounts for 81.68%, flotation agent system: (1) siderite roughing: sodium hexametaphosphate 400g / t, sulfuric acid to adjust pH = 5 ~ 6, SP collection Agent 700g / t, starch 600g / t, 2 # Oil 40g / t aerated and scraped (2) Siderite selection I: starch 400g / t, 2 # Oil 20g / t is aerated and foamed (3) Siderite selection II: adjust pH to 5-6 with sulfuric acid, starch 200g / t, 2 # Oil 15g / t, aerated and foamed (4) Siderite Selection III: adjust pH to 5-6 with sulfuric acid, starch 200g / t, 2 # Oil 6g / ...

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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...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03B1/00B03D1/02B03D1/08
Inventor 陈晓鸣邱崇栋肖军辉雷云肖荣华张昱张宗华
Owner KUNMING UNIV OF SCI & TECH
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