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Lead-zinc ore smelting slag-steel slag lightweight high-strength concrete and preparation method thereof

A high-strength concrete and smelting slag technology, which is applied in the field of building materials, can solve the problems of low utilization rate of steel slag and environmental pollution, and achieve the effect of light weight and improved product strength

Pending Publication Date: 2020-08-18
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the current problems of low utilization rate of lead-zinc ore smelting slag and steel slag, and pollute the environment. According to the characteristics that concrete can make full use of industrial solid waste, it provides a substitute for lead-zinc ore smelting slag and steel slag after treatment. Method for preparing lightweight high-strength concrete with part of cement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) The lead-zinc ore smelting slag and steel slag processed by the enterprise are ultra-finely ground by ball mill-vibration mill combined grinding system, and the specific surface areas are 538m2 / kg and 565m2 / kg respectively to stimulate their activity.

[0018] (2) Part of the ceramsite is broken into ceramsite with a certain particle size gradient, which is used to replace fine aggregate;

[0019] (3) Moisten the pottery sand and ceramsite obtained in step (2) with water.

[0020] (4) Ingredients, each cubic meter of concrete is composed of the following components: 455KG cement, 65KG mineral powder, 6.5KG nano powder, 26KG lead-zinc ore smelting slag, 33KG steel slag powder, 65KG silica fume, 897KG ceramsite, 57KG pottery sand, Machine-made sand 370KG, water 180KG, superplasticizer 14.6KG.

[0021] (5) Thoroughly stir and mix mineral powder, nano powder and silica fume, and then fully stir and mix with active lead-zinc ore smelting slag micropowder and steel slag ...

Embodiment 2

[0025] (1) The lead-zinc ore smelting slag and steel slag treated by the enterprise are ultra-finely ground by ball mill-vibration mill combined grinding system, with specific surface areas of 552m2 / kg and 583m2 / kg, to stimulate their activity.

[0026] (2) Part of the ceramsite is broken into ceramsite with a certain particle size gradient, which is used to replace fine aggregate;

[0027] (3) Moisten the pottery sand and ceramsite obtained in step (2) with water.

[0028] (4) Ingredients, each cubic meter of concrete is composed of the following components: 463KG cement, 70KG mineral powder, 6.5KG nano powder, 33KG lead-zinc ore smelting slag, 15KG steel slag powder, 63KG silica fume, 897KG ceramsite, 57KG pottery sand, Machine-made sand 370KG, water 170KG, superplasticizer 15.2KG.

[0029] (5) Thoroughly stir and mix mineral powder, nano powder and silica fume, and then fully stir and mix with active lead-zinc ore smelting slag micropowder and steel slag micropowder obtain...

Embodiment 3

[0033] (1) The lead-zinc ore smelting slag and steel slag processed by the enterprise are ultra-finely ground by the ball mill-vibration mill combined grinding system, and the specific surface areas are 532m2 / kg and 558m2 / kg to stimulate their activity.

[0034] (2) Part of the ceramsite is broken into ceramsite with a certain particle size gradient, which is used to replace fine aggregate;

[0035] (3) Moisten the pottery sand and ceramsite obtained in step (2) with water.

[0036] (4) Ingredients, each cubic meter of concrete consists of the following components: 450KG cement, 65KG mineral powder, 5KG nano powder, 32.5KG lead-zinc ore smelting slag, 25KG steel slag powder, 65KG silica fume, 887KG ceramsite, 57KG pottery sand, Machine-made sand 370KG, water 176KG, superplasticizer 15KG.

[0037] (5) Thoroughly stir and mix mineral powder, nano powder and silica fume, and then fully stir and mix with active lead-zinc ore smelting slag micropowder and steel slag micropowder ob...

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Abstract

The invention discloses lead-zinc ore smelting slag-steel slag lightweight high-strength concrete and a preparation method thereof. Each cubic meter of the concrete comprises 440-480 kg of cement, 65-75 kg of mineral powder, 6-7 kg of nano powder, 25-35 kg of lead-zinc ore smelting slag, 25-35 kg of steel slag powder, 60-70 kg of silica fume, 850-900 kg of ceramsite, 50-60 kg of pottery sand, 350-400 kg of machine-made sand, 170-190 kg of water and 13-16 kg of a superplasticizer. The preparation method comprises the steps: firstly, carrying out efficient ultrafine grinding on lead-zinc ore smelting slag and steel slag treated by an enterprise by adopting a ball mill-vibration mill combined grinding system; grinding until the specific surface area is 500-600 m<2> / kg; accurately weighing theraw materials according to the weight percentage; wetting the ceramsite pottery sand with water, and pouring into a stirrer; pouring various powder materials together, uniformly stirring, adding a mixture of water and a water reducing agent, fully and uniformly stirring, pouring out, and filling into a mold to obtain the light-weight high-strength concrete, wherein the 28-day compressive strengthof the finally obtained product reaches 60-80 MPa, and the volume density is 1800-1900 kg / m<3>. According to the invention, the use amount of cement is reduced, solid wastes such as lead-zinc ore smelting slag and steel slag are fully utilized, and the purposes of waste utilization and environmental protection are achieved.

Description

technical field [0001] The invention relates to a lead-zinc ore smelting slag-steel slag lightweight high-strength concrete and a preparation method thereof, belonging to the technical field of building materials. Background technique [0002] With the rapid development of the concrete industry and the modern construction industry, higher requirements are put forward for the performance of concrete. Under the premise of ensuring that the basic performance remains unchanged, high strength and light weight are one of the development directions. Using lightweight high-strength concrete for construction The construction cost can be reduced and the economic benefit can be improved. At the same time, the utilization of solid waste resources is also a research hotspot in today's society. Using industrial solid waste to prepare lightweight high-strength concrete can not only meet the needs of modern buildings, but also achieve the purpose of recycling waste and environmental protect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B111/40
CPCC04B28/00C04B2111/40C04B2201/20C04B2201/52C04B14/06C04B14/02C04B18/142C04B18/141C04B18/146C04B18/027C04B18/023C04B2103/302
Inventor 韦家崭刘荣进陈平敬代焱梁海区龙祖业黄崇奕赵艳荣
Owner GUILIN UNIVERSITY OF TECHNOLOGY