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Method of manufacturing silicate bricks with lead-and-zinc tailings

A silicate, tailings technology, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., to achieve the effect of improving compactness, increasing content, and high-pressure molding density

Inactive Publication Date: 2013-04-24
JIANGSU EAST CHINA MINE TAILINGS MANAGEMENT ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of silicate products with a quartz content of less than 20% has not yet been reported.

Method used

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  • Method of manufacturing silicate bricks with lead-and-zinc tailings
  • Method of manufacturing silicate bricks with lead-and-zinc tailings
  • Method of manufacturing silicate bricks with lead-and-zinc tailings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1: the mixture ratio is shown in Table 3

[0041] Table 3 Embodiment 1 Mixture ratio

[0042]

[0043] Step 1: Mixture Preparation

[0044] Put 14 kg of lime, 10 kg of quartz sand powder, 66 kg of lead-zinc tailings, 10 kg of river sand and 5 kg of half of the mixing water into a forced mixer and stir for 4-8 minutes until the materials are mixed evenly and become wet Stirring is stopped during the state, and the mixture is obtained;

[0045] Step Two: Mixture Digestion

[0046] Leave the mixture for 3-6 hours to allow the lime to be fully digested. When the temperature of the mixture reaches the highest temperature (60-70°C), the lime digestion is complete.

[0047] The third step: the second mixing of the mixture

[0048] Add 5 kg of the remaining half of the mixing water to the digested mixture and put it into a forced mixer and stir for 2-4 minutes.

[0049] Step Four: Grinding the Mixture

[0050] The agglomerated mixture is rolled and compacted...

Embodiment 2

[0057] Embodiment 2: See Table 4 for the mixture ratio.

[0058] Table 4 Embodiment 2 Mixture ratio

[0059]

[0060] Step 1: Mixture Preparation

[0061] Put 17 kg of lime, 15 kg of quartz sand powder, 53 kg of lead-zinc tailings, 15 kg of river sand and 5.5 kg of half of the mixing water into a forced mixer and stir for 4-8 minutes until the materials are mixed evenly and become wet Stirring is stopped during the state, and the mixture is obtained;

[0062] Step Two: Mixture Digestion

[0063] Leave the mixture for 3-6 hours to allow the lime to be fully digested. When the temperature of the mixture reaches the highest temperature (60-70°C), the lime digestion is complete.

[0064] The third step: the second mixing of the mixture

[0065] Add 5.5 kg of the remaining half of the mixing water to the digested mixture and put it into a forced mixer and stir for 2-4 minutes.

[0066] Step Four: Grinding the Mixture

[0067] The agglomerated mixture is rolled and compacted ...

Embodiment 3

[0074] Embodiment 3: See Table 5 for the mixture ratio.

[0075] Table 5, embodiment 3 mixture ratio

[0076]

[0077] Step 1: Mixture Preparation

[0078] Put 20 kg of lime, 15 kg of quartz sand powder, 45 kg of lead-zinc tailings, 20 kg of river sand and 6 kg of half of the mixing water into a forced mixer and stir for 4-8 minutes until the materials are mixed evenly and become wet Stirring is stopped during the state, and the mixture is obtained;

[0079] Step Two: Mixture Digestion

[0080] Leave the mixture for 3-6 hours to allow the lime to be fully digested. When the temperature of the mixture reaches the highest temperature (60-70°C), the lime digestion is complete.

[0081] The third step: the second mixing of the mixture

[0082] Add 6 kg of the remaining half of the mixing water to the digested mixture and put it into a forced mixer and stir for 2-4 minutes.

[0083] Step Four: Grinding the Mixture

[0084] The agglomerated mixture is rolled and compacted t...

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Abstract

The invention aims at features to the lead-and-zinc tailings and provides a method of manufacturing steaming-and-pressing silicate wall materials, wherein the features include low content of silica, large density, coarse granules and the like. The method of manufacturing silicate bricks with lead-and-zinc tailings has the advantages that the lead-and-zinc tailings with high true density, containing a certain number of coarse granules and high bulk density is used and can be used for aggregates of the silicate bricks with good effects of moulding pressure transition and beneficial for compression moulding. High compression moulding density can be obtained. The defect that the content of the silica in the lead-and-zinc tailings is not enough can be overcome through adulteration partial ground fine quartz sands. The method of manufacturing silicate bricks with the lead-and-zinc tailings is a processing method of the lead-and-zinc tailings that the technology is simple and the cost is low.

Description

technical field [0001] The invention belongs to the field of resource utilization of inorganic solid waste, is suitable for the comprehensive utilization of lead-zinc tailings, and is a method for preparing a new type of building wall material by using lead-zinc tailings with low quartz content and high density. Background technique [0002] Lead-zinc tailings are powdery waste slag discharged after lead-zinc ore beneficiation. Generally, medium-scale lead-zinc beneficiation plants discharge about 100,000-300,000 tons of tailings annually. The discharge of lead-zinc tailings is large, and now the method of stacking is generally adopted, which requires a large amount of farmland and pollutes nearby rivers. Therefore, the comprehensive utilization of lead-zinc tailings is imperative. [0003] There are more than 150 kinds of lead ore in nature, but the main mining value is only galena (PbS), white lead ore (PbCO 3 ), there are more than 50 kinds of zinc ores, but the most com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/12C04B18/12
CPCY02W30/91
Inventor 崔晓昱郭伟白海静杨秀丽崔崇张芬芬吕慧峰
Owner JIANGSU EAST CHINA MINE TAILINGS MANAGEMENT ENG
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