A method for preparing solid waste-based cementitious materials by ultra-low carbon and ultra-low emission cascade grinding

Abstract

The invention relates to the technical field of solid waste resource utilization, and proposes a method for preparing solid waste-based cementitious materials through ultra-low-carbon and ultra-low-emission cascade grinding, including the following steps: S1, mixing slag with grinding aids, and then pulverizing Grind to specific surface area ≥ 600m 2 / kg, to obtain the first slag; S2, mix the slag with grinding aid, and grind until the specific surface area is 500m 2 / kg‑600 m 2 / kg to obtain the second slag; S3, after mixing the steel slag and desulfurized gypsum, grind until the specific surface area is ≥450m 2 / kg, to obtain the third powder; S4, mixing the first slag, the second slag, and the third powder to obtain a solid waste-based cementitious material. Through the above technical solution, the problem of low activity and strength of the solid waste-based gelling material in the related art is solved.

Description

technical field

[0001] The invention relates to the technical field of resource utilization of solid waste, in particular to a method for preparing solid waste-based gelling materials by ultra-low-carbon, ultra-low-emission cascade grinding. Background technique

[0002] The solid waste-based cementitious material is a hydraulic cementitious material prepared in a certain proportion after processing and grinding solid waste such as slag, steel slag, industrial by-product gypsum, fly ash, iron tailings, etc. Preparation of masonry mortar, plastering mortar and ground mortar. Making solid waste into cementitious materials can replace natural resources such as limestone, bauxite, clay, and coal. At the same time, it can also realize the hydration and packaging of harmful impurities in solid waste to reduce secondary pollution to the environment.

[0003] The existing method of preparing cementitious materials with slag, steel slag and desulfurized gypsum as raw materials is to...

Examples

Embodiment 1

[0026] This embodiment provides a method for preparing solid waste-based cementitious materials by ultra-low-carbon and ultra-low-emission cascade grinding, which includes the following steps:

[0027] S0, mixing 10 parts of triethanolamine with 3 parts of sodium tripolyphosphate, 7 parts of sodium fluoroaluminate, 3 parts of sodium diethyldithiocarbamate, 3 parts of polysuccinimide, and 30 parts of water to obtain a grinding aid ;

[0028] S1. Mix the slag and grinding aid at a mass ratio of 20:1, and then transport it to the vertical mill for grinding through the belt conveyor until the specific surface area is ≥ 600m 2 / kg, get the first slag, transport to 1# semi-finished product warehouse;

[0029] S2. Mix the slag and the grinding aid according to the mass ratio of 25:1, and then transport it to the vertical mill for grinding by the belt conveyor, and grind until the specific surface area is 500m 2 / kg-600m 2 / kg, to obtain the second slag, transported to 2# semi-fini...

Embodiment 2

[0033] This embodiment provides a method for preparing solid waste-based cementitious materials by ultra-low-carbon and ultra-low-emission cascade grinding, which includes the following steps:

[0034] S0, mixing 20 parts of triethanolamine with 5 parts of sodium tripolyphosphate, 10 parts of sodium fluoroaluminate, 5 parts of sodium diethyldithiocarbamate, 5 parts of polysuccinimide, and 50 parts of water to obtain a grinding aid ;

[0035] S1. Mix the slag and grinding aid at a mass ratio of 20:1, and then transport it to the vertical mill for grinding through the belt conveyor until the specific surface area is ≥ 600m 2 / kg, get the first slag, transport to 1# semi-finished product warehouse;

[0036] S2. Mix the slag and the grinding aid according to the mass ratio of 25:1, and then transport it to the vertical mill for grinding by the belt conveyor, and grind until the specific surface area is 500m 2 / kg-600m 2 / kg, to obtain the second slag, transported to 2# semi-fin...

Embodiment 3

[0040] This embodiment provides a method for preparing solid waste-based cementitious materials by ultra-low-carbon and ultra-low-emission cascade grinding, which includes the following steps:

[0041] S0, mixing 10 parts of triethanolamine with 3 parts of sodium tripolyphosphate, 7 parts of sodium fluoroaluminate, 3 parts of sodium diethyldithiocarbamate, 3 parts of polysuccinimide, and 30 parts of water to obtain a grinding aid ;

[0042] S1. Mix the slag and grinding aid at a mass ratio of 20:1, and then transport it to the vertical mill for grinding through the belt conveyor until the specific surface area is ≥ 600m 2 / kg, get the first slag, transport to 1# semi-finished product warehouse;

[0043] S2. Mix the slag and the grinding aid according to the mass ratio of 25:1, and then transport it to the vertical mill for grinding by the belt conveyor, and grind until the specific surface area is 500m 2 / kg-600m 2 / kg, to obtain the second slag, transported to 2# semi-fini...

technical field

[0001] The invention relates to the technical field of resource utilization of solid waste, in particular to a method for preparing solid waste-based gelling materials by ultra-low-carbon, ultra-low-emission cascade grinding. Background technique

[0002] The solid waste-based cementitious material is a hydraulic cementitious material prepared in a certain proportion after processing and grinding solid waste such as slag, steel slag, industrial by-product gypsum, fly ash, iron tailings, etc. Preparation of masonry mortar, plastering mortar and ground mortar. Making solid waste into cementitious materials can replace natural resources such as limestone, bauxite, clay, and coal. At the same time, it can also realize the hydration and packaging of harmful impurities in solid waste to reduce secondary pollution to the environment.

[0003] The existing method of preparing cementitious materials with slag, steel slag and desulfurized gypsum as raw materials is to...

Examples

Embodiment 1

[0026] This embodiment provides a method for preparing solid waste-based cementitious materials by ultra-low-carbon and ultra-low-emission cascade grinding, which includes the following steps:

[0027] S0, mixing 10 parts of triethanolamine with 3 parts of sodium tripolyphosphate, 7 parts of sodium fluoroaluminate, 3 parts of sodium diethyldithiocarbamate, 3 parts of polysuccinimide, and 30 parts of water to obtain a grinding aid ;

[0028] S1. Mix the slag and grinding aid at a mass ratio of 20:1, and then transport it to the vertical mill for grinding through the belt conveyor until the specific surface area is ≥ 600m 2 / kg, get the first slag, transport to 1# semi-finished product warehouse;

[0029] S2. Mix the slag and the grinding aid according to the mass ratio of 25:1, and then transport it to the vertical mill for grinding by the belt conveyor, and grind until the specific surface area is 500m 2 / kg-600m 2 / kg, to obtain the second slag, transported to 2# semi-fini...

Embodiment 2

[0033] This embodiment provides a method for preparing solid waste-based cementitious materials by ultra-low-carbon and ultra-low-emission cascade grinding, which includes the following steps:

[0034] S0, mixing 20 parts of triethanolamine with 5 parts of sodium tripolyphosphate, 10 parts of sodium fluoroaluminate, 5 parts of sodium diethyldithiocarbamate, 5 parts of polysuccinimide, and 50 parts of water to obtain a grinding aid ;

[0035] S1. Mix the slag and grinding aid at a mass ratio of 20:1, and then transport it to the vertical mill for grinding through the belt conveyor until the specific surface area is ≥ 600m 2 / kg, get the first slag, transport to 1# semi-finished product warehouse;

[0036] S2. Mix the slag and the grinding aid according to the mass ratio of 25:1, and then transport it to the vertical mill for grinding by the belt conveyor, and grind until the specific surface area is 500m 2 / kg-600m 2 / kg, to obtain the second slag, transported to 2# semi-fin...

Embodiment 3

[0040] This embodiment provides a method for preparing solid waste-based cementitious materials by ultra-low-carbon and ultra-low-emission cascade grinding, which includes the following steps:

[0041] S0, mixing 10 parts of triethanolamine with 3 parts of sodium tripolyphosphate, 7 parts of sodium fluoroaluminate, 3 parts of sodium diethyldithiocarbamate, 3 parts of polysuccinimide, and 30 parts of water to obtain a grinding aid ;

[0042] S1. Mix the slag and grinding aid at a mass ratio of 20:1, and then transport it to the vertical mill for grinding through the belt conveyor until the specific surface area is ≥ 600m 2 / kg, get the first slag, transport to 1# semi-finished product warehouse;

[0043] S2. Mix the slag and the grinding aid according to the mass ratio of 25:1, and then transport it to the vertical mill for grinding by the belt conveyor, and grind until the specific surface area is 500m 2 / kg-600m 2 / kg, to obtain the second slag, transported to 2# semi-fini...

Images