Water-permeable brick and method for preparing sintered water-permeable brick from manganese dioxide slag and plant ash

A technology of manganese dioxide slag and electrolytic manganese dioxide, which is applied in applications, household utensils, clay products, etc., can solve the problems of single utilization method and the difficulty of recycling electrolytic manganese dioxide waste slag, and achieve ideal comprehensive performance and high water permeability Coefficient, the effect of ensuring compressive strength and wear resistance

Active Publication Date: 2021-02-09
HUNAN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In recent years, with the implementation and advancement of the national energy conservation and environmental protection strategy, the biomass power generation and battery (including power battery and energy storage battery) industries have developed rapidly. Among them, the market demand for electrolytic manganese dioxide as a battery depolarizer is also increasing. Increasingly, the recycling of electrolytic manganese dioxide waste residue has become a difficult problem for related enterprises. At the same time, the ash generated by biomass power generation is generally used as agricultural fertilizer, and the utilization method is relatively simple
If the electrolytic manganese dioxide waste slag and plant ash produced by biomass power generation can be used comprehensively to prepare permeable bricks, it will be a new way to comprehensively utilize the above-mentioned industrial wastes. However, no related reports have been seen so far.

Method used

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  • Water-permeable brick and method for preparing sintered water-permeable brick from manganese dioxide slag and plant ash
  • Water-permeable brick and method for preparing sintered water-permeable brick from manganese dioxide slag and plant ash
  • Water-permeable brick and method for preparing sintered water-permeable brick from manganese dioxide slag and plant ash

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Effect test

Embodiment 1

[0029] The raw material components used in this embodiment include water by the following powder raw materials in parts by weight: 52 parts of electrolytic manganese dioxide slag passing through a 200 mesh sieve, 25 parts of plant ash, 20 parts of 800 mesh quartz powder, 2.5 parts of sodium silicate, 18 parts of limestone powder with a fineness of 0.3mm.

[0030] The steps for preparing sintered permeable bricks are:

[0031] 1. Preparation of green body wet material: Dissolve sodium silicate with an appropriate amount of water at 40-50°C, dry-type stir and mix other powder materials evenly, and then add sodium silicate aqueous solution and water to stir. The water consumption in this step is 29wt% of the total amount of powder, after stirring to obtain fine sandy non-cohesive wet ash particles, stop stirring to obtain wet powder;

[0032] 2. Wet material compression molding: add wet powder into the molding mold three times, and tamp it after each feeding. After all the wet p...

Embodiment 2

[0044] The raw material components used in this embodiment include water by the following powder raw materials in parts by weight: 56 parts of electrolytic manganese dioxide slag, 23 parts of plant ash, 24 parts of quartz powder, 3 parts of sodium silicate, and 22 parts of fineness of 0.3mm of limestone powder.

[0045] The steps for preparing sintered permeable bricks are:

[0046] 1. Preparation of green body wet material: Dissolve sodium silicate with an appropriate amount of water at 40-50°C, dry-type stir and mix other powder materials evenly, and then add sodium silicate aqueous solution and water to stir. The water consumption in this step is 31wt% of the powder total amount, after stirring to obtain fine sandy non-cohesive wet ash particles, stop stirring to obtain wet powder;

[0047] 2. Wet material compression molding: add wet powder into the molding mold three times, tamp it after each feeding, after all the wet powder is added, mold compression molding, molding p...

Embodiment 3

[0058] The raw material components used in this embodiment include water by the following powder raw materials in parts by weight: 54 parts of electrolytic manganese dioxide slag, 20 parts of plant ash, 22 parts of quartz powder, 2.8 parts of sodium silicate, and 20 parts of fineness of 0.3mm of limestone powder.

[0059] The steps for preparing sintered permeable bricks are:

[0060] 1. Preparation of green body wet material: Dissolve sodium silicate with an appropriate amount of water at 40-50°C, dry-type stir and mix other powder materials evenly, and then add sodium silicate aqueous solution and water to stir. The water consumption in this step is 30wt% of the total amount of powder, after stirring to obtain fine sandy non-cohesive wet ash particles, stop stirring to obtain wet powder;

[0061] 2. Wet material compression molding: add wet powder into the molding mold three times, tamp it after each feeding, after all the wet powder is added, mold compression molding, mold...

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Abstract

The invention discloses a water permeable brick and a method for preparing the sintered water permeable brick from manganese dioxide slag and plant ash. In the method for preparing the sintered water-permeable brick from the manganese dioxide slag and the plant ash, raw materials are composed of water and the following powder in parts by weight: 52-56 parts of electrolytic manganese dioxide slag,20-25 parts of plant ash of a biological power plant, 20-24 parts of quartz powder, 2.5-3 parts of sodium silicate and 18-22 parts of limestone powder with the fineness of 0.3 mm. The preparation process comprises four steps of preparation of a green body wet material, compression molding of the wet material, green body drying and sintering. A sintered microcrystalline ceramic structure taking pyroxene and wollastonite as main crystalline phases is formed in the water-permeable brick sintered by the method, so that the compressive strength and the wear resistance of the water-permeable brick are guaranteed, and the prepared water-permeable brick also has an obviously higher water permeability coefficient than a traditional water permeable brick, and is more ideal in comprehensive performance, and a new alternative way is provided for resource utilization of electrolytic manganese dioxide and biomass power generation waste residues.

Description

technical field [0001] The invention relates to the technical field of industrial solid waste reuse, in particular to a permeable brick and a method for preparing a sintered permeable brick by using manganese dioxide slag and plant ash. Background technique [0002] Permeable bricks are also called permeable bricks. As the concept of ecological sponge city is gradually accepted by people, the application of permeable bricks in urban ground hardening pavement is increasing. Permeable bricks have three very key performance indicators: water permeability, compressive strength and wear resistance. Among them, the height of the water permeability determines the water permeability of the brick body. If the water permeability is too low, the rainwater penetration rate will be too slow, which will easily form surface runoff on the paved ground. The compressive strength and wear resistance determine the durability of the permeable bricks. For example, if the compressive strength is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B33/132C04B33/13
CPCC04B38/02C04B33/1328C04B33/13C04B33/131C04B2235/3418C04B2235/3427C04B2235/3208C04B2235/5427C04B2235/602C04B2235/606C04B2235/656C04B2235/6562C04B2235/6567C04B2235/94C04B2235/96Y02P40/60
Inventor 曾利群
Owner HUNAN INST OF TECH
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