A method for treating s95 grade slag powder with microwave synergistic activation
A technology of activation treatment and slag powder, applied in the field of microwave synergistic activation treatment of S95 slag powder, can solve the problem of low activity of S95 slag powder, and achieve the effect of high-quality treatment, reduction of static electricity and low power consumption
Active Publication Date: 2019-11-15
阜阳市鑫源建材有限公司
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Problems solved by technology
[0005] The present invention starts from solving the problem of low activity of the existing S95 grade slag micropowder, uses the unique mechanical excitation advantage of microwave, and mixes it with a chemical activator to prepare a highly active S95 grade slag powder
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0015] A method for microwave synergistic activation treatment of S95 grade slag powder, comprising the following steps:
[0016] (1) Stir and mix the S95 grade slag micropowder and synergist according to the weight ratio of 8.5:0.01, then transport it to the microwave reactor, treat it with 300W microwave radiation power and 1000MHz microwave frequency, and output it for cooling after 30min;
[0017] (2) The cooled material is sent into the horizontal ball mill together with the grinding aid, and the ball mill is processed until the specific surface area is 450m 2 / kg, that is.
[0018] The S95 grade slag powder in step (1) is a commercially available slag powder that meets the national standard of GB / T18046, and its main technical indicators are: density (g / cm 3 ) ≥ 2.8, specific surface area (m 2 / kg) ≥ 400, 7-day activity index ≥ 75%, 28-day activity index ≥ 95%.
[0019] The synergist in step (1) is formed by mixing 1% by weight of powdered sodium silicate and the bala...
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Abstract
The invention discloses a method for microwave synergistic activating treatment of S95-level slag powder. Further refinement treatment is carried out on commercially available S95-level slag powder by adopting unique performance of a microwave, an alkaline synergist prepared by compounding sodium silicate and nano calcium carbonate is added, the surfaces of mineral powder and the synergist are heated and excited under the action of the microwave, so that enhanced modification of the surface of the mineral powder is achieved, the effect of the method is more significant than that of a traditional modification method, the hydration activity of the surface of the powder is excited and the specific surface area is greatly enlarged; the powder treated by the microwave is finally ground under the action of a liquid grinding aid containing silica sol, sodium lignin sulfonate, triethanolamine and an ethanol / water complex solution, so that static electricity on the surface of the powder with high specific surface area can be effectively reduced and powder aggregation is prevented, thereby obtaining high-activity and high-dispersity slag powder under relatively low power consumption and achieving high-quality treatment of slag.
Description
technical field [0001] The invention relates to a method for microwave synergistic activation treatment of S95 grade slag powder. Background technique [0002] Slag is a by-product produced when iron and steel plants smelt pig iron. It is formed by the reaction of CaO and MgO with the soil components in iron ore and ash in coke at 1400-1600 ° C, and then quenched in air or water. The annual discharge of granular particulate matter is astonishing. If it is not effectively treated and utilized, it will be a huge waste of resources and the environment. At present, the comprehensive utilization of slag mainly includes the production of slag cement and cement concrete admixtures, the production of inorganic cementitious materials, the preparation of glass-ceramics, the preparation of adsorbents, inorganic foam materials, etc., which are widely used and have huge potential economic potential. [0003] Granulated blast furnace slag is the solid waste slag discharged during the iro...
Claims
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IPC IPC(8): C04B5/00C04B5/06
CPCC04B5/00C04B5/06
Inventor 邵兵朱长胜李成才徐征柳金强杜光辉
Owner 阜阳市鑫源建材有限公司