Preparation method of silicon-aluminum-based cementing material, silicon-aluminum-based cementing material and application of silicon-aluminum-based cementing material

A cementitious material, silicon-aluminum-based technology, applied in cement production, carbon capture, etc., can solve the problems of site occupation, salinization, loss of salt and impurities, etc., to reduce carbon emissions, reduce carbon content, and long life Effect

Pending Publication Date: 2022-08-02
洛阳绿筑建筑材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The long-term storage of this salt not only occupies a large amount of land, but also poses a huge threat to the environment. The salt and impurities are easily lost, salinizing the surrounding soil, endangering the surrounding vegetation, and polluting the surrounding rivers, water sources, rice fields, etc.

Method used

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  • Preparation method of silicon-aluminum-based cementing material, silicon-aluminum-based cementing material and application of silicon-aluminum-based cementing material
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  • Preparation method of silicon-aluminum-based cementing material, silicon-aluminum-based cementing material and application of silicon-aluminum-based cementing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A preparation method of a silica-alumina-based cementitious material, comprising the following steps:

[0030] Step 1: In terms of mass percentage, the raw materials include 39% of slag, 28% of waste concrete, 15% of fly ash, 10% of calcined industrial waste salt, 3.5% of coal gangue, 2% of tailings, and 2.5% of waste glass The raw materials are respectively loaded into the raw material warehouse;

[0031] Step 2: The waste concrete, fly ash, and industrial waste salt calcined and pyrolyzed at 1000°C for 18 hours in step 1 are conveyed to the ring roller mill through the conveyor belt under the hopper, and the slag, tailings, waste glass, and coal gangue are passed through The conveyor belt under the hopper is conveyed to the vertical grinding equipment, and the ground is uniformly ground to a specific surface area of ​​420m 2 / kg of coarse material, and then transported to the material tank by the bucket elevator for standby;

[0032] Step 3: The coarse material in s...

Embodiment 2

[0036] A preparation method of a silica-alumina-based cementitious material, comprising the following steps:

[0037] Step 1: In terms of mass percentage, the raw materials include 30% of slag, 35% of waste concrete, 10% of fly ash, 15% of calcined industrial waste salt, 5% of coal gangue, 3% of tailings, and 2% of waste glass The raw materials are respectively loaded into the raw material warehouse;

[0038] Step 2: The waste concrete, fly ash, and industrial waste salt calcined and pyrolyzed at 1250°C for 6 hours in step 1 are conveyed to the ring roller mill through the conveyor belt under the hopper, and the slag, tailings, waste glass, and coal gangue are passed through The conveyor belt under the hopper is conveyed to the vertical grinding equipment, and the ground is uniformly ground to a specific surface area of ​​420m 2 / kg of coarse material, and then transported to the material tank by the bucket elevator for standby;

[0039] Step 3: The coarse material in step 2...

Embodiment 3

[0043] A preparation method of a silica-alumina-based cementitious material, comprising the following steps:

[0044] Step 1: In terms of mass percentage, the raw materials include 45% of slag, 21% of waste concrete, 20% of fly ash, 7% of calcined industrial waste salt, 2% of coal gangue, 1% of tailings, and 4% of waste glass The raw materials are respectively loaded into the raw material warehouse;

[0045] Step 2: Transfer the waste concrete, fly ash, and industrial waste salt that has been pyrolyzed at 1100°C for 12 hours in step 1 to the ring roller mill through the conveyor belt below the hopper, and transfer the slag, tailings, waste glass, and coal gangue to the ring roller mill. The conveyor belt under the hopper is conveyed to the vertical grinding equipment, and the ground is uniformly ground to a specific surface area of ​​420m 2 / kg of coarse material, and then transported to the material tank by the bucket elevator for standby;

[0046] Step 3: The coarse materi...

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Abstract

The invention discloses preparation of a silicon-aluminum-based cementing material, the silicon-aluminum-based cementing material and application of the silicon-aluminum-based cementing material, relates to the technical field of building materials, and aims at the phenomenon that the existing industrial solid waste resource utilization rate is low. The method comprises the following steps: respectively loading raw materials including 30-45% of slag, 21-35% of waste concrete, 10-20% of fly ash, 5-15% of calcined and pyrolyzed industrial waste salt, 2-5% of coal gangue, 1-3% of tailings and 1-4% of waste glass into a raw material bin; grinding to obtain a silicon-aluminum-based cementing material; and packaging and placing in a dry and ventilated place. According to the present invention, the building waste material and the industrial waste salt are reasonably proportioned, the prepared silicon-aluminum-based cementing material has low carbon content, the carbon emission during the production and use process is effectively reduced, and the low-carbon cement prepared by using the silicon-aluminum-based cementing material as the main raw material has characteristics of high quality and good effect.

Description

technical field [0001] The invention relates to the technical field of building materials, and more particularly to the preparation of a silica-aluminum-based cementitious material, the silica-aluminum-based cementitious material and the technical field of its application. Background technique [0002] Cement is currently the most widely used man-made material. When mixed with water, it forms concrete, which can be used in the construction of various infrastructures such as buildings, bridges, roads and sidewalks. The production process of Portland cement is representative in cement production. Limestone and clay are used as the main raw materials, which are crushed, batched and ground into raw materials, which are then fed into cement kilns to calcine clinker, and then clinker is calcined. The material is ground by adding an appropriate amount of gypsum (sometimes mixed with mixed materials or admixtures). [0003] While cement largely shapes the modern built environment,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/147C04B7/24C04B7/26C04B7/38
CPCC04B7/147C04B7/24C04B7/26C04B7/38C04B7/243Y02P40/18
Inventor 智程洋孔盈懿李英铭李英旗李泽同智程龙智程程智程琳候雯熙
Owner 洛阳绿筑建筑材料有限公司
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