Method for preparing quartz mineral separation circulating water purifying agent by using quartz tail mud

Abstract

The invention discloses a method for preparing a quartz mineral separation circulating water purifying agent by using quartz tail mud, and belongs to the technical field of comprehensive utilization of waste materials. Comprising the following raw materials in parts by weight: 40-70 parts of quartz tail mud, 30-60 parts of calcium waste and 1-5 parts of a pore-forming agent. The main raw materials of the prepared circulating water purifying agent are industrial wastes, so that the circulating water purifying agent not only can realize waste reutilization and environmental friendliness, but also can purify water quality and effectively reduce the metal content in quartz mineral separation circulating water, other properties of the circulating water are not changed, and the recycling period of the circulating water is prolonged; the beneficiation cost and the wastewater treatment cost are greatly reduced, the'one-arrow double-carving 'effect is achieved, and the method has important application value in the technical field of comprehensive utilization of waste materials.

Description

Technical Field

[0001] The invention belongs to the technical field of comprehensive utilization of waste materials, and in particular relates to a method for preparing a quartz ore dressing circulating water purifier by utilizing quartz tailings. Background Art

[0002] As an extremely important non-metallic mineral resource, quartz is widely used in glass, glass fiber, metal silicon and other industries and in strategic emerging industries. Therefore, the production capacity of quartz sand in my country is increasing day by day, and the by-products produced in the processing process, especially the treatment of quartz sand beneficiation tailings, are becoming more and more serious, which has a great impact on the normal operation of quartz sand beneficiation plants.

[0003] On the other hand, with the continuous exploitation and utilization of quartz ore, my country's high-quality quartz resources are gradually scarce, and low-grade quartz ore has begun to be valued, and the requirements for mineral processing technology are getting higher and higher. At present, most of the quartz ores in China need flotation or pickling to meet the indicators of photovoltaic glass sand, but the beneficiation costs of flotation and pickling processes are high, resulting in many photovoltaic sand beneficiation plants with meager profits or even losses. The main reason for the high cost of flotation and pickling processes is the low recycling rate of flotation reagent circulating water and pickling circulating acid. If the recycling rate of flotation reagent circulating water and pickling circulating acid is improved, the cost of mineral processing and wastewater treatment can be greatly reduced. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a method for preparing a quartz ore dressing circulating water purifier by utilizing quartz tailings.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A method for preparing a quartz ore dressing circulating water purifier using quartz tailings comprises the following steps:

[0007] S1, quartz tailings, calcium waste, pore-forming agent and water are mixed evenly in a mixer to obtain slurry;

[0008] S2, placing the slurry obtained in step S1 in a reactor for hydrothermal reaction, and completing the reaction to obtain a hydrothermal reaction product;

[0009] S3, crushing the hydrothermal reaction product obtained in step S2 in a crusher, and then grinding the ore to obtain a quartz ore dressing circulating water purifier prepared by using quartz tailings.

[0010] Furthermore, the raw materials are calculated in parts by weight as follows: 40-70 parts of quartz tailings, 30-60 parts of calcium waste, and 1-5 parts of pore-forming agent.

[0011] Furthermore, the quartz tailings are tailings produced during the quartz beneficiation process, and the particle size requirement is -0.074 mm.

[0012] Furthermore, the calcareous waste is one or more of carbide slag, white mud slag, and alkali slag, and the particle size requirement is -0.074mm.

[0013] Furthermore, the pore-forming agent is sodium bicarbonate.

[0014] Furthermore, in step S1, the rotation speed of the stirrer is 500-800 rpm.

[0015] Furthermore, the temperature of the hydrothermal reaction in step S2 is 140° C.-180° C., and the reaction time is 6-14 h.

[0016] Furthermore, in step S3, the ore is ground to a particle size of -0.074 mm.

[0017] Quartz tailings and calcium waste form a hydrothermal product with a large number of micro-nano pore structures through hydrothermal reaction. This substance can solidify heavy metal ions such as iron, titanium, and chromium. The addition of pore-forming agents causes bubbles to form inside the hydrothermal product, forming a microporous structure, increasing its specific surface area, and further improving the solidification effect of the purifier on heavy metal ions.

[0018] Beneficial effects of the present invention:

[0019] The circulating water purifier prepared by the present invention has industrial waste as its main raw materials, which can not only realize waste recycling and be environmentally friendly, but also purify water quality, effectively reduce the metal content in quartz ore dressing circulating water without changing other properties of the circulating water, thereby increasing the recycling period of the circulating water, greatly reducing the ore dressing cost and wastewater treatment cost, achieving the effect of "killing two birds with one stone", and having important application value in the field of comprehensive waste utilization technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 This is a process flow chart of the preparation process of the purifier according to Example 1 of the present invention. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example 1

[0024] Raw materials introduction: the quartz sand ore dressing tailings and ore dressing circulating water (flotation reagent circulating water, pickling circulating acid) used in this embodiment are all from a quartz sand ore dressing plant in Inner Mongolia, the calcium waste used is carbide slag from an acetylene plant in Anhui, and the pore-forming agent is industrial grade sodium bicarbonate;

[0025] according to Figure 1 The preparation process shown is carried out:

[0026] S1, 50g quartz tailings (particle size is -0.074mm), 40g carbide slag (particle size is -0.074mm), 1g sodium bicarbonate and 200mL water were mixed in a 500rpm stirrer to obtain a slurry;

[0027] S2, placing the slurry obtained in step S1 in a reactor for hydrothermal reaction at a reaction temperature of 150° C. for a reaction time of 8 h, and completing the reaction to obtain a hydrothermal reaction product;

[0028] S3, crushing the hydrothermal reaction product obtained in step S2 in a crusher, and then grinding it to a particle size of -0.074 mm, to obtain a quartz ore dressing circulating water purifier prepared by using quartz tailings.

[0029] Example 2

[0030] Introduction to raw materials: The quartz sand beneficiation tailings and beneficiation circulating water (pickling circulating acid solution) used in this embodiment are from a quartz sand beneficiation plant in Yunnan, the calcium waste used is the alkali slag from an alkali plant in Anhui, and the pore-forming agent is industrial-grade sodium bicarbonate;

[0031] S1, 60g of quartz tailings (particle size is -0.074mm), 60g of alkali residue (particle size is -0.074mm), 5g of sodium bicarbonate and 200mL of water were mixed in a stirrer at 800rpm to obtain a slurry;

[0032] S2, placing the slurry prepared in step S1 in a reactor for hydrothermal reaction at a reaction temperature of 160° C. for a reaction time of 10 h, and completing the reaction to obtain a hydrothermal reaction product;

[0033] S3, crushing the hydrothermal reaction product obtained in step S2 in a crusher, and then grinding it to a particle size of -0.074 mm, to obtain a quartz ore dressing circulating water purifier prepared by using quartz tailings.

[0034] Comparative Example 1

[0035] Use commercially available circulating water purifiers.

[0036] The purification performance of Examples 1-2 and Comparative Example 1 was measured, and the measuring method was as follows:

[0037] Take 500ml of flotation reagent water and pickling circulating acid solution respectively and place them in beakers, add 5g of purifier to each of the two circulating waters; stir the circulating water after adding purifier with a stirrer for 10 minutes; let it precipitate naturally, then transfer the supernatant in the beaker into a centrifuge tube for centrifugation, take the supernatant in the centrifuge tube, and measure Fe in the supernatant by atomic absorption spectrometry. 2+ The pH value of the supernatant was measured.

[0038] The measured results are shown in the following table:

[0039]

[0040]

[0041] It can be seen from the above table that the circulating water purifier prepared in the embodiment of the present invention can effectively reduce the metal content in the quartz ore dressing circulating water, and has important application value in the field of comprehensive utilization of waste materials technology.

[0042] In the description of the specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0043] The above contents are merely examples and explanations of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the invention or exceed the scope defined by the claims, they shall all fall within the protection scope of the present invention.

Claims

1. A method for preparing a quartz ore dressing circulating water purifier using quartz tailings, characterized in that: The steps include: S1, quartz tailings, calcium waste, pore-forming agent and water are mixed evenly in a mixer to obtain slurry; S2, placing the slurry prepared in step S1 in a reactor for hydrothermal reaction, and completing the reaction to obtain a hydrothermal reaction product; S3, crushing the hydrothermal reaction product obtained in step S2 in a crusher, and then grinding the ore to obtain a quartz ore dressing circulating water purifier prepared by utilizing the quartz tailings.

2. The method for preparing a quartz ore dressing circulating water purifier using quartz tailings according to claim 1, characterized in that: The raw materials are calculated in parts by weight as follows: 40-70 parts of quartz tailings, 30-60 parts of calcium waste, and 1-5 parts of pore-forming agent.

3. The method for preparing a quartz ore dressing circulating water purifier using quartz tailings according to claim 1, characterized in that: The quartz tailings are tailings produced in the quartz beneficiation process, and the particle size requirement is -0.074mm.

4. The method for preparing a quartz ore dressing circulating water purifier using quartz tailings according to claim 1, characterized in that: The calcareous waste is one or more of carbide slag, white mud slag and alkali slag, and the particle size requirement is -0.074mm.

5. The method for preparing a quartz ore dressing circulating water purifier using quartz tailings according to claim 1, characterized in that: The pore-forming agent is sodium bicarbonate.

6. The method for preparing a quartz ore dressing circulating water purifier using quartz tailings according to claim 1, characterized in that: The rotation speed of the stirrer in step S1 is 500-800 rpm.

7. The method for preparing a quartz ore dressing circulating water purifier using quartz tailings according to claim 1, characterized in that: The temperature of the hydrothermal reaction in step S2 is 140° C.-180° C., and the reaction time is 6-14 h.

8. The method for preparing a quartz ore dressing circulating water purifier using quartz tailings according to claim 1, characterized in that: In step S3, the ore is ground to a particle size of -0.074 mm.

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