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Preparation method of neutral flotation agent for purifying quartz minerals

A flotation agent and neutral technology, which is applied in the field of preparation of neutral flotation agents, to achieve the effects of reducing treatment costs, reducing the risk of waste acid polluting the environment, and reducing investment and maintenance costs

Pending Publication Date: 2018-06-19
(CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the shortcomings of the existing acid flotation technology, and propose a preparation method for a neutral flotation agent for quartz mineral purification

Method used

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  • Preparation method of neutral flotation agent for purifying quartz minerals

Examples

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Comparison scheme
Effect test

example 1

[0026] Example 1, take Fe 2 o 3 The vein quartz type quartz sand with a content of 130ppm and a particle size composition of 0.5mm is mixed with water to make a slurry with a mass concentration of 30%, placed in a flotation cell, stirred for 1min, and then stirred for 3min after adding an inhibitor. Take 0.2ml of neutral flotation agent, dilute it to 20ml with water, add it to the flotation tank at one time, stir for 1min, inflate for 30s, scrape to collect the foam, which is the flotation concentrate. In this scheme, the productive rate of flotation concentrate is 96%, Fe 2 o 3 The content is 85ppm.

example 2

[0027] Example two, the Fe 2 o 3 River and lake sedimentary quartz sand with a content of 0.14% and a particle size composition of 0.5mm is mixed with water to make a slurry with a mass concentration of 50%. After pretreatment by common mechanical scrubbing methods, the mud is removed to obtain scrubbing concentrate. Prepare the scrubbing fine sand and water to make a slurry with a mass concentration of 20%, put it in the flotation tank and stir for 1 minute, add the inhibitor and then stir for 3 minutes. Take 0.4ml of this neutral flotation agent, dilute it to 20ml with water, add it to the flotation tank at one time, stir for 2min, inflate for 30s, scrape to collect the foam, which is the flotation concentrate. In this scheme, the productive rate of flotation concentrate is 70%, Fe 2 The O content is 0.08%.

example 3

[0028] Example 3: Utilize the neutral flotation of the present invention to purify other qualified size grade quartzite and vein quartz type quartz sand. Under the same flotation conditions, the flotation agent consumption and flotation fine sand product index are shown in Table 1.

[0029]

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Abstract

The invention relates to a preparation method of a neutral flotation agent for purifying quartz minerals. The preparation method comprises the following steps of mixing raw materials, namely amines, an organic halogenated acid or a halogenated acid salt according to the molar ratio greater than or equal to 1, putting the mixture into a reaction kettle so as to prepare a crude flotation agent through reaction, and adjusting the pH value to obtain the neutral flotation agent. The preparation method of the neutral flotation agent for purifying the quartz minerals has the advantages that the prepared flotation agent has the functions of collecting and foaming, and is relatively low in kinematic viscosity, relatively good in hard water resistance and relatively low in freezing point; and directflotation of quartz sand can be realized without acids under the neutral conditions, so that the investment cost and the maintenance cost of ore dressing corrosion-resistant equipment are reduced, and the wastewater treatment cost of an ore dressing plant is reduced; the prepared floatation agent is used in coordination with an inhibitor, so that effective separation of the quartz sand from ironoxide disseminated type quartz sand and iron-containing aluminosilicate minerals is realized, and flotation and purification of the quartz minerals are realized; and the quartz fine sand can meet therequirements of glass, ceramic, plates and chemical industries for high-quality quartz raw materials.

Description

technical field [0001] The invention relates to the technical field of non-metallic ore beneficiation and purification technology processing, in particular to a preparation method of a neutral flotation agent used for purification of quartz minerals. Background technique [0002] As an important functional mineral raw material in glass, ceramics, and chemical industry, quartz sand is widely used in important fields such as optical communication, photovoltaic power generation, aerospace, and military affairs. With the depletion of high-quality crystal and vein quartz resources, more and more attention has been paid to the purification of relatively poor-quality quartz ore resources. The purification of quartz minerals mainly includes physical methods, such as crushing, grinding, classification and magnetic separation; chemical methods, Such as acid leaching, chlorination roasting and microbial leaching; physical and chemical methods, such as flotation, among which flotation i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/001B03D103/02B03D101/02B03D101/04
Inventor 张乾伟段树桐陈志强李佩悦吴建新石倩倩魏光耀
Owner (CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD
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