Anti-radiation aerated concrete containing lead and zinc tailings

Abstract

The invention discloses anti-radiation aerated concrete containing lead and zinc tailings. The anti-radiation aerated concrete is prepared from, by mass percentage, 5-20% of lead and zinc tailings, 5-15% of cement, 10-40% of fine sand, 10-40% of fly ash, 10-20% of quicklime, 1-5% of gypsum and 0.05-0.10% of aluminum powder paste. Accordingly, high added-value utilization of the lead and zinc tailings can be achieved, the production cost is lowered, and the anti-radiation property of the aerated concrete is improved.

Description

technical field [0001] The invention belongs to the field of environment and building materials, in particular to a radiation-proof aerated concrete containing lead and zinc tailings. Background technique [0002] The management and control of mine tailings dams has always been a difficult problem for mining enterprises. On the one hand, there are environmental pollution problems such as dust and heavy metal leaching, and on the other hand, there are safety problems such as dam failures, and related cases occur frequently at home and abroad. To solve this problem The best way to solve the problem is to safely recycle the tailings. The direction of cement concrete can meet this demand, and cement curing can effectively solidify and stabilize most heavy metals, and the annual output of concrete in my country has exceeded 2 billion m3 for many years 3 In many places, the shortage of sandstone and admixture resources has caused the price to skyrocket. However, the discharge of ...

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Problems solved by technology

The value of barite among the high value-added elements in lead-zinc tailings is relatively high, but the main problem is that the extraction cost is high, and the economic benefits of special extraction are not obvious. In view of this, it is necessary to study a kind of lead-zinc tailings anti-radiation air-entrained concrete

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