Biological ceramisite filter material made of vulcanized lead zinc ore flotation tailings, and preparation method thereof

A technology for flotation tailings and lead-zinc sulfide, which is applied to the removal of ceramic products, other household utensils, and solid waste. It can solve the problems of fragility and cracking, incomplete combination of treatment effect and economic performance, and low strength of finished products. , to achieve the effect of high degree of industrialization, high quality and low price of finished products, and reduced cost of main materials

Inactive Publication Date: 2013-05-08
HOHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the ceramsite filter material has the advantages of high porosity, stable chemical properties, high mechanical strength, good filtered water quality, strong permeability, and high filtration rate, its main technical indicators are superior to quartz sand and anthracite filter materials, and can be widely used in tap water filtration. , urban sewage treatment and filter media used in petroleum and chemical industries, etc., but there are still the following main problems: First, the treatment effect and economic performance cannot be perfectly combined. For example, the ceramsite filter material with good adsorption performance has a large specific surface area, but its strength Low cost, short service life and high cost of regeneration treatment; ceramsite filter material with good economic performance has high strength, small specific surface area, low cost of regeneration treatment, but poor adsorption performance
The second is that the main defects of ordinary ceramsite filter materials are: insufficient surface roughness, poor hydrophilicity, difficulty in attaching microorganisms, complicated preparation and firing processes, poor uniformity of ceramsite finished products, inconvenient application, and unreasonable specific gravity. A fluidized st

Method used

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  • Biological ceramisite filter material made of vulcanized lead zinc ore flotation tailings, and preparation method thereof
  • Biological ceramisite filter material made of vulcanized lead zinc ore flotation tailings, and preparation method thereof

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preparation example Construction

[0029] combine figure 1, a kind of preparation method that utilizes lead-zinc ore flotation tailings biological ceramsite filter material that the present invention proposes, is to be by initial main and auxiliary raw material according to the lead-zinc ore flotation tailings biological ceramsite filter material of the present invention After the proportioning and weighing, through the steps of drying→mixing→forming→drying→preheating→roasting→cooling, the finished bio-ceramic filter material of lead-zinc sulfide ore flotation tailings is obtained, specifically including:

[0030] Step 1, drying: drying the weighed and proportioned lead-zinc ore flotation tailings main material, clay, and pore-forming agent auxiliary materials at 100-110°C for later use;

[0031] Step 2, mixing materials: mix the flotation tailings, clay and pore-forming agent main and auxiliary materials that are dried and used in step 1, and then sprinkle them in the disc granulator for later use;

[0032] ...

Embodiment 1

[0038] Embodiment 1: biological ceramsite filter material of the present invention is made of 85.8wt.% lead-zinc ore flotation tailings, 12.2wt.% clay, 2wt.% sawdust pore-forming agent and lignin xanthogen with an additional mass fraction of 10% It is made of calcium acid solution binder, and the solid-liquid ratio of the raw materials used in the biological ceramsite filter material is 10:1. The preparation method of biological ceramsite filter material finished product of the present invention specifically comprises:

[0039] Step 1, drying: drying the weighed and proportioned lead-zinc ore flotation tailings main material, clay, and pore-forming agent auxiliary materials at 105°C for later use;

[0040] Step 2, mixing materials: Mix the flotation tailings, clay and pore-forming agent main and auxiliary materials of the lead-zinc sulfide ore flotation tailings, clay and pore-forming agent that are dried and used in step 1, and then sprinkle them in a Φ80mm disc granulator f...

Embodiment 2

[0046] Embodiment 2: biological ceramsite filter material of the present invention is made of 80wt.% lead-zinc ore flotation tailings, 18.5wt.% clay, 1.5wt.% sawdust pore-forming agent and sodium silicate solution with an additional mass fraction of 10% It is made of binder, and the solid-to-liquid ratio of the raw materials used in the biological ceramsite filter material is 8:1. The preparation method of biological ceramsite filter material finished product of the present invention specifically comprises:

[0047] Step 1, drying: drying the weighed and proportioned lead-zinc ore flotation tailings main material, clay, and pore-forming agent auxiliary materials at 100°C for later use;

[0048] Step 2, mixing materials: Mix the flotation tailings, clay and pore-forming agent main and auxiliary materials of the lead-zinc sulfide ore flotation tailings, clay and pore-forming agent that are dried and used in step 1, and then sprinkle them in a Φ80mm disc granulator for later use...

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Abstract

The invention relates to a biological ceramisite filter material made of vulcanized lead zinc ore flotation tailings. The material is characterized by being prepared from 80-90wt% of vulcanized lead zinc ore flotation tailings, 8-18wt% of clay, 1.5-2.5wt% of pore former and an additional bonder, wherein the pore former is sawdust, bamboo scraps or straws, the bonder is lignin calcium xanthate, sodium carbonate or sodium silicate liquid, and the solid-to-liquid ratio of materials used by the biological ceramisite filter material is (8-12):1. The preparation method comprises the following steps of: weighing based on proportion of main and auxiliary materials; drying; mixing; forming; drying; preheating; roasting; and cooling to prepare a biological ceramisite filter material product made of the vulcanized lead zinc ore flotation tailings. The preparation method is simple and convenient to implement, free from secondary pollution, practical and reliable. The biological ceramisite filter material made of the vulcanized lead zinc ore flotation tailings provided by the invention has the advantages of turning ore waste residue into wealth and greatly lowering the cost of materials, so that the biological ceramisite filter material is a high-quality water treatment agent.

Description

Technical field [0001] The invention belongs to the technical field of preparation of water treatment agents, in particular to a biological ceramsite filter material for flotation tailings of lead-zinc ore and a preparation method thereof. [0002] Background technique [0003] Tailings refer to the ore mined from metal or non-metal mines, and the waste residue discharged after the valuable concentrate is selected by the concentrator. Due to the large amount of these tailings, they contain useful or harmful components that cannot be treated temporarily, and if they are discharged randomly, they will cause resource loss, flood farmland or silt up rivers in large areas, and pollute the environment. For example, at present, the main treatment method of tailings in my country is stockpiling in tailings ponds, which not only increases the additional cost of mineral processing, but also is a major source of danger and environmental pollution. cause environmental pollution accide...

Claims

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Application Information

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IPC IPC(8): C04B38/06B09B3/00
Inventor 汪顺才余学勇袁荣灼毛超杰
Owner HOHAI UNIV
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