Concrete containing electrolytic manganese slag, preparation method thereof, and concrete pavement

Abstract

The invention relates to concrete containing electrolytic manganese slag, a preparation method thereof, and a concrete pavement and relates to the field of materials. The concrete is prepared by mixing raw materials including, by weight, 130-200 parts of grading electrolytic manganese slag calcined material; 13-20 parts of cement, 5-10 parts of silica fume, 10-15 parts of fly ash, 0.5-0.8 parts ofa dispersant, 0.7-1 part of a water reducing agent, and 10-15 parts of water; the grading electrolytic manganese slag calcined material is prepared by calcining electrolytic manganese slag at 800-1000 DEG C, and crushing and grading the product. The concrete has good anti-freezing performance and high strength, is suitable for pavement, can effectively save sand and stone, and improves utilization rate of the electrolytic manganese slag. The preparation method is simple, is convenient to carry out and is free of pollution, and can effectively increase performance of the concrete containing electrolytic manganese slag. Meanwhile, by applying the concrete containing electrolytic manganese slag to a concrete pavement, the pavement has good anti-freezing performance and high strength and is long in service life.

Description

technical field [0001] The invention relates to the field of materials, and in particular to a concrete containing electrolytic manganese slag, a preparation method thereof, and a concrete pavement. Background technique [0002] my country is the world's most important producer of manganese metal, with an annual manganese output of more than 90% of the world's total output, and most of its products are obtained through sulfuric acid rhodochrosite (the main active ingredient is MnCO 3 ) after obtaining manganese sulfate in the electrolyte, it is realized by electrolysis, because MnCO in manganese ore in my country 3 The content is only within 20%, and other mineral components in the ore are discharged in the form of electrolytic manganese slag during the compounding reaction. The concentration of sulfate, ammonia nitrogen and manganese in electrolytic manganese slag is relatively high, and the concentration of arsenic, mercury and selenium is also relatively high. The elect...

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Problems solved by technology

According to the production statistics of relevant enterprises, for every ton of electrolytic manganese powder produced, the amount of acid leaching waste residue discharged is about 5-6 tons. At present, the annual production capacity of electrolytic manganese in my country has exceeded 1 million tons, and the annual discharge of waste residue has exceeded 6 million tons. On the one hand, these acid leaching wastes increase the cost of land requisition and site disposal for enterprises to pile up wastes, which increases the production cost of enterprises and consumes a lot of land resources; Surface and groundwater, affecting groundwater resources, leading to water pollution

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