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Modified concrete brick containing sludge gasification dry distillation slag and preparation method thereof

A technology of sludge gasification and concrete bricks, which is applied to clay preparation devices, chemical instruments and methods, and pyrolysis treatment of sludge, etc., can solve the problems of low utilization rate of urban sludge and lack of green building materials, etc., and achieve reduction The effect of production costs

Active Publication Date: 2020-06-12
郑州市格沃环保开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of low urban sludge utilization rate and lack of green building materials in the prior art, the present invention provides a modified concrete brick containing sludge gasification and retort slag and its preparation method

Method used

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  • Modified concrete brick containing sludge gasification dry distillation slag and preparation method thereof
  • Modified concrete brick containing sludge gasification dry distillation slag and preparation method thereof
  • Modified concrete brick containing sludge gasification dry distillation slag and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A modified concrete brick containing sludge gasification and retort slag, the raw materials include: sludge gasification and retort slag 65%, cement 20%, lithium carbonate 0.03%, water 15%, wherein the powder in the sludge gasification and retort slag The slag ratio is 1:3.

[0027] Preparation process: crush the gasified dry distillation slag through a roller crusher, control the coarse particle size to 5-15mm, and then sieve the powder through a 3mm sieve, and the rest is slag; weigh the raw materials according to the formula ratio, mix Stir evenly; pour the mixture into the mold and press to form. The pressing pressure is 20Mpa, and the pressure holding time is 10s. After forming, it is demoulded and placed in a cool place for natural curing.

[0028] The basic mechanical properties of the prepared concrete bricks were tested according to GBT 21144-2007. The ratio and basic mechanical properties of the concrete bricks in this embodiment are shown in Table 1.

[0029...

Embodiment 2

[0033] A modified concrete brick containing sludge gasification and retort slag, raw materials include: sludge gasification and retort slag 70%, cement 15%, calcium formate 0.02%, water 15%, wherein the powder in the sludge gasification and retort slag The slag ratio is 2:3.

[0034] Preparation process: crush the gasified dry distillation slag through a roller crusher, control the coarse particle size to 5-15mm, and then sieve the powder through a 3mm sieve, and the rest is slag. Weigh the raw materials according to the proportion of the formula, mix and stir evenly; pour the mixture into the mold and press to form. The pressing pressure is 30Mpa, and the pressure holding time is 15s. After forming, the mold is demoulded and placed in a cool place for natural curing.

[0035] The basic mechanical properties of the prepared concrete bricks were tested according to GBT 21144-2007. The proportion and basic mechanical properties of the concrete bricks in this embodiment are shown...

Embodiment 3

[0040] A modified concrete brick containing sludge gasification and retort slag, the raw materials include: sludge gasification and retort slag 60%, cement 25%, calcium formate 0.05%, water 15%, wherein the powder in the sludge gasification and retort slag The slag ratio is 1:2.

[0041] Preparation process: crush the gasified dry distillation slag through a roller crusher, control the coarse particle size to 5-15mm, and then sieve the powder through a 3mm sieve, and the rest is slag. Weigh the raw materials according to the proportion of the formula, mix and stir evenly; pour the mixture into the mold and press to form, the pressing pressure is 25Mpa, and the holding time is 10s. After forming, the mold is demoulded and placed in a cool place for natural curing.

[0042] The basic mechanical properties of the prepared concrete bricks were tested according to GBT 21144-2007. The proportion and basic mechanical properties of the concrete bricks in this embodiment are shown in T...

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Abstract

The invention belongs to the field of recycling of urban and industrial waste resources, and particularly relates to a modified concrete brick containing sludge gasification dry distillation slag anda preparation method thereof. The modified concrete brick is prepared from the following raw materials in percentage by mass: 50%-70% of the gasification dry distillation slag, 15%-25% of cement, 10%-15% of water and 0.01%-0.05% of an accelerant, wherein the ratio of powder to slag in the gasification dry distillation slag is (1-2): 3. The preparation method comprises the following steps: airing the gasification dry distillation slag until the moisture content is less than or equal to 10%, passing through a double-roll crusher, controlling the particle size of coarse particles to be 5-15mm, screening out powder by virtue of a 3mm sieve, weighing cement, the gasification dry distillation slag, the accelerant and water, and uniformly mixing the cement, the gasification dry distillation slag,the accelerant and water; and pouring the mixture into a mold, performing compression molding, demolding, and performing natural curing. The municipal sludge is dried, granulated and gasified to obtain the sludge gasification dry distillation slag, and the sludge gasification dry distillation slag is used as a raw material for preparing the modified concrete brick, thereby being beneficial to environmental protection and lowering the production cost of factories.

Description

technical field [0001] The invention belongs to the field of reuse of urban and industrial waste resources, and in particular relates to a modified concrete brick containing sludge gasification and retort slag and a preparation method thereof. Background technique [0002] With the increase of urban population and the development of industrial production, the discharge of urban wastewater and sewage is increasing, which also leads to a surge in the discharge of urban sludge. According to reports, my country's sewage discharge has reached 5.11×10 4 billion tons per year, and the amount of sludge accounts for about 0.3% to 0.5% of the treated water, and the annual discharge is huge. Sludge contains some heavy metals, pathogenic bacteria and toxic organic substances, which will cause environmental hazards such as land pollution, decay, odor, and groundwater pollution. However, municipal sludge is also rich in biological sources, organic matter and some inorganic components, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04B28C5/00B28B11/24B28B3/00C02F11/10C02F11/12
CPCC04B28/04B28C5/00B28B3/00B28B11/245C02F11/12C02F11/10C04B2111/00017C02F2303/06C04B18/06C04B18/0427C04B22/10C04B24/04Y02W10/40
Inventor 赵琦白浩张伟锟罗忠玉冯晨杨智李兵刘宇
Owner 郑州市格沃环保开发有限公司
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