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Anti-flotation Fe-refining and Si-reducing technology medicine

A reverse flotation and process technology, applied in flotation, solid separation, etc., can solve the problems of large consumption of reagents and insufficient flotation performance

Inactive Publication Date: 2008-06-25
淄博市华联矿业有限责任公司
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Problems solved by technology

[0005] The main disadvantages of the flotation reagents in the prior art are: insufficient flotation performance, large consumption of reagents, and the grade of concentrate iron is generally below 65%

Method used

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  • Anti-flotation Fe-refining and Si-reducing technology medicine

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Experimental program
Comparison scheme
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Embodiment

[0018] 1. Drug preparation

[0019] 1) Types and dosages of chemicals: See Table 1 for the chemicals used in reverse flotation operations and their types, concentrations, administration locations, unit consumption and total consumption, etc.

[0020] Table 1 The dosage and addition table of flotation reagent types

[0021]

[0022] 2) Preparation of medicine

[0023] a.NaOH: Add liquid alkali or solid alkali with a concentration of 40-50% into the stirring tank and add water to dilute to a solution with a concentration of 6%.

[0024] b. cornstarch: add a certain amount of cornstarch into a stirring tank equipped with an appropriate amount of water and NaOH (starch concentration is about 5%, and the amount of NaOH is about 2% of cornstarch) and stir, after stirring evenly (into Paste) was heated to 90-95°C with steam, then stirred for 1 hour, stopped heating, and then diluted with water to a concentration of 2.5%.

[0025] c. MD-28 collector: Take out the finished MD-28 ...

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Abstract

The invention relates to a technology reagent of reverse flotation for increasing iron and reducing silicon, which is characterized in that the technology reagent consists of the materials with the weight ratio: amylum: sodium hydroxide: collecting agent: calcium oxide is 1: 0.15-0.30: 0.20-0.35: 1.0-1.3. The reagent of the invention has the advantages of simple preparation process, convenient storage and rational adding method, etc. The invention is used in the reverse flotation milling. The iron grade of the iron concentrate can reach more than 66.5 percent and has a substantial economic benefit.

Description

technical field [0001] The invention belongs to the technical field of using a mixture of inorganic compounds and organic compounds as a flotation agent, and in particular relates to a reverse flotation iron-improving and silicon-reducing process agent and an adding method thereof. Background technique [0002] Most of my country's iron ore resources are low-iron and high-silicon lean iron ores. The high content of silicon in iron concentrates affects the utilization coefficient of blast furnaces, which is the biggest problem in the quality of iron concentrates. The biggest factor of quality, the reverse flotation method is currently the most effective method to raise iron and reduce silicon. [0003] Reverse flotation is generally divided into anion reverse flotation and cationic reverse flotation. Reagents for anion reverse flotation mainly include collectors, inhibitors, activators, regulators, etc. The role of collectors is to change the hydrophobicity of the mineral sur...

Claims

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Application Information

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IPC IPC(8): B03D1/018B03D101/00B03D101/02
Inventor 孙彦庆沈兴玉
Owner 淄博市华联矿业有限责任公司
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