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High-titanium blast furnace slag high-strength lightweight aggregate and preparation method thereof

A high-titanium blast furnace slag and lightweight aggregate technology, which is applied in the field of concrete materials, can solve problems such as secondary pollution, low resource utilization, and complex processes, so as to improve the compressive bearing capacity, improve the composition and structure, and simplify the production process Effect

Pending Publication Date: 2021-07-09
成渝钒钛科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The extraction, recovery, and development of titanium in high-titanium blast furnace slag have always been the focus of research. The titanium element is enriched in a certain mineral phase (mainly perovskite) through physical-chemical methods, and then extracted through a combination of separation and smelting. Titanium is a theoretically feasible technical solution, but the process is complex and will cause serious secondary pollution, so it basically stays in the laboratory research stage, and it is difficult to promote and apply it on a large scale
On the whole, a practical method has not been found so far to fundamentally solve the problems of large output, low resource utilization rate and low added value

Method used

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  • High-titanium blast furnace slag high-strength lightweight aggregate and preparation method thereof
  • High-titanium blast furnace slag high-strength lightweight aggregate and preparation method thereof
  • High-titanium blast furnace slag high-strength lightweight aggregate and preparation method thereof

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preparation example Construction

[0025] A method for preparing high-strength lightweight aggregate of high-titanium blast furnace slag, comprising the following steps:

[0026] S1. Prepare the pulverized blast furnace slag, silicon-aluminum modified components, air-entraining agent and flux;

[0027] S2. Drying the materials in S1, then mixing the blast furnace slag, silicon-aluminum modified components, air-entraining agent and fluxing agent in proportion, and forming into balls to form raw meal balls of 6-10 mm;

[0028] S3. Put the raw meal balls obtained in S2 into the firing system through the kiln tail of the rotary kiln ceramsite production line for firing treatment to obtain high-strength and light aggregate of high-titanium blast furnace slag;

[0029] S4, discharging and cooling the high-titanium blast furnace slag high-strength light aggregate obtained in S3.

[0030] Wherein, the firing process is to send the dried raw meal balls into the rotary kiln, the rotating speed of the rotary kiln is 1.1r...

Embodiment 1

[0033] Embodiment 1, a kind of high-titanium blast furnace slag high-strength light aggregate, each component is calculated by mass percentage, high titanium blast furnace slag 55%, fly ash 35%, coal dust 5%, feldspar 2% and water glass 3 % mix composition.

[0034]

[0035] A method for preparing high-strength lightweight aggregate of high-titanium blast furnace slag, comprising the following steps:

[0036] S1. Prepare the blast furnace slag that has been pulverized, the specific surface area of ​​high titanium blast furnace slag is 350m2 / kg, and fly ash, coal powder, feldspar and water glass;

[0037] S2, drying the materials in S1, and then mixing blast furnace slag, fly ash, coal powder, feldspar and water glass in proportion to form raw meal balls of 6-10 mm;

[0038] S3. Put the raw meal balls obtained in S2 into the firing system through the kiln tail of the rotary kiln ceramsite production line for firing treatment. ~1300℃) with a rotation speed of 2.8r / min, and ...

Embodiment 2

[0040] Embodiment 2, a high-strength light aggregate of high-titanium blast furnace slag, each component is counted by mass percentage, high-titanium blast furnace slag is 63%, fly ash 27%, coal dust 5%, feldspar 2% and water glass 3% mixed composition.

[0041]

[0042] A method for preparing high-strength lightweight aggregate of high-titanium blast furnace slag, comprising the following steps:

[0043] S1. Prepare the blast furnace slag that has been pulverized, the specific surface area of ​​high titanium blast furnace slag is 350m2 / kg, and fly ash, coal powder, feldspar and water glass;

[0044]S2, drying the materials in S1, and then mixing blast furnace slag, fly ash, coal powder, feldspar and water glass in proportion to form raw meal balls of 6-10 mm;

[0045] S3. Put the raw material balls obtained in S2 into the firing system through the kiln tail of the rotary kiln ceramsite production line for firing treatment. ~1300℃) with a rotation speed of 2.8r / min, and t...

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Abstract

The invention discloses a high-titanium blast furnace slag high-strength lightweight aggregate and a preparation method thereof. The high-titanium blast furnace slag high-strength lightweight aggregate is prepared by mixing, by mass, 40%-75% of high-titanium blast furnace slag, 25%-40% of a silicon-aluminum modified component, 3%-8% of an air entraining agent and 2%-12% of a cosolvent. The preparation method comprises the following step of S1, preparing crushed blast furnace slag, a silicon-aluminum modified component, an air entraining agent and a cosolvent. The lightweight aggregate has the beneficial effects that by combining the element composition and structural characteristics of the high-titanium blast furnace slag and optimally designing the mineral composition and structure in the lightweight aggregate finished product, the compressive bearing capacity of the overall structure of the lightweight aggregate is improved, meanwhile, the consumption of the high-titanium blast furnace slag is large, the production process is simple and practical, the comprehensive performance of the obtained lightweight aggregate is remarkably superior to that of ceramsite, the performance requirement of high-strength lightweight aggregate concrete is basically met, and the lightweight aggregate can be used for various large key projects.

Description

technical field [0001] The invention relates to the technical field of concrete materials, in particular to a high-strength light aggregate of high-titanium blast furnace slag and a preparation method thereof. Background technique [0002] The light weight and high strength of high-strength lightweight aggregate concrete are not only conducive to reducing the weight of the structure, reducing the structural section, and reducing the cost of the project, but also conducive to the improvement of the anti-seismic and disaster prevention capabilities of structural engineering and the extension of service life. Large-scale engineering constructions such as high-rise buildings and super-long-span bridges provide new materials with significant technical, economic and social values. In our country, the high-strength and high-performance lightweight aggregate, which is the core material of high-strength lightweight aggregate concrete, still faces the dilemma of uneven quality and sho...

Claims

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Application Information

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IPC IPC(8): C04B38/06C04B18/02C04B33/13C04B33/132
CPCC04B38/068C04B33/1328C04B33/13C04B18/027C04B2235/3472C04B2235/3481C04B2235/3418C04B2235/422C04B2235/656C04B2235/6567C04B2235/77C04B2235/96Y02P40/60
Inventor 宋进田通强陈仁宏牟小海王占熬杨雪峰
Owner 成渝钒钛科技有限公司
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