Superfine sulfur-containing tailing concrete

A technology of concrete and sulfur tailings, applied in the field of resource utilization of sulfur tailings, which can solve the problems of low market acceptance, immature properties of alkali-activated materials, and affecting the promotion and application of sulfur tailings-based concrete products, etc. To achieve the effect of increasing the bulk density
CN113149551AActive Publication Date: 2021-07-23安徽铜冠产业技术研究院有限责任公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
安徽铜冠产业技术研究院有限责任公司
Publication Date
2021-07-23

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Abstract

The invention discloses superfine sulfur-containing tailing concrete. The superfine sulfur-containing tailing concrete is prepared from the following raw materials: low-clinker cement and superfine sulfur-containing tailings. According to the present invention, the cementing technology principle is adopted, the M32.5 low-clinker composite cement is adopted as the cementing material, and the superfine sulfur-containing tailings are adopted to replace the cement and the water in the same volume so as to prepare the superfine sulfur-containing tailing high-content concrete; sulfate released by acidification of sulfide of the superfine sulfur-containing tailings is fully utilized to excite high-quantity auxiliary materials of the M32.5 cement, the cementing strength is improved, the economic value of the superfine sulfur-containing tailings is improved to the level of the M32.5 cement, waste is turned into wealth, and harm is turned into treasure. The concrete disclosed by the invention is stable in mechanical property and micro-expansive. The method is simple to operate and low in cost, and has a wide application prospect under the background of shortage of raw materials in the building material market.
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Description

technical field

[0001] The invention relates to the field of resource utilization of sulfur-containing tailings, in particular to ultrafine sulfur-containing tailings concrete. Background technique

[0002] Tailings are industrial solid wastes discharged during the sorting operation after ore mining, and the amount is huge. According to statistics, the national discharge of iron tailings alone is as high as about 12 billion m 3 . Such a huge amount of tailings not only accumulates and occupies land, seriously pollutes soil, water resources and air, but also needs to invest a lot of money in the maintenance and operation of tailings ponds. Therefore, the resource utilization of tailings has become the consensus of all walks of life, and it is also the key direction of the recycling of industrial solid waste resources in China.

[0003] However, the tailings discharged from the non-ferrous metal industry are often associated with a large amount of sulfide (mainly pyrite, Fe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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