Nanometer high-tech sea sand and river sand harmful substance removal production method and production equipment thereof

Abstract

The invention discloses a nanometer high-tech sea sand and river sand harmful substance removal production method and production equipment thereof. The production method sequentially comprises the following steps: 1) conducting primary rough washing to sea sand or river sand by using a washing method; 2) fully mixing hydrogen peroxide solution with the sea sand or river sand subjected to primary rough washing for washing; 3) conducting rough washing again to the sea sand or river sand subjected to washing in the previous step by adopting the washing method to obtain finished products. The nanometer high-tech sea sand and river sand harmful substance removal production method and production equipment thereof have the advantages that since a hydrogen peroxide and water washing method is utilized, microorganisms, organic matters and algae on the surface of the sea sand or river sand can be effectively removed, the electric conducting performance of the water is increased, static electricity can be prevented from being produced to adsorb fine powder, harmful substances in the sea sand or river sand can be removed, the washed finished products are cleaner, the quality of the finished products is improved, the production equipment is simple and mass production can be realized.

Description

technical field [0001] The invention belongs to the technical field of cement building materials, and in particular relates to a production method and production equipment for removing harmful substances in sea sand and river sand and improving quality by using nanometer technology. Background technique [0002] Sea sand is susceptible to sea water erosion due to long-term immersion in sea water, and the surface is relatively rough. Generally, typical sea sand contains 2.7% sodium chloride, 0.05% calcium chloride, 0.01% magnesium sulfate, 0.11% calcium sulfate, and 0.32% magnesium chloride. %, etc., there are some harmful substances such as microorganisms, organic substances and water-soluble inorganic substances. There are acidic substances on the surface of sea sand, which will produce acid-base neutralization when mixed with cement, which is close to neutral, making concrete lose the function of protecting steel bars. Substances are more difficult to clean. [0003] Rive...

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Problems solved by technology

[0002] Sea sand is susceptible to sea water erosion due to long-term immersion in sea water, and the surface is relatively rough. Generally, typical sea sand contains 2.7% sodium chloride, 0.05% calcium chloride, 0.01% magnesium sulfate, 0.11% calcium sulfate, and 0.32% magnesium chloride. %, etc., there are some harmful substances such as microorganisms, organic substances and water-soluble inorganic substances. There are acidic substances on the surface of sea sand, which will produce acid-base neutralization when mixed with cement, which is close to neutral, making concrete lose the function of protecting steel bars. Substance is more difficult to clean

[0003] River sand is easy to obtain, and it does not contain SO4 and Cl plasma hazards like sea sand, but it is polluted by algae and moss produced by industrial and household wastewater and water oxidation. It is also suitable for high-quality engineering sand. It will cause a certain degree of impact. If it is not treated, there will be the following disadvantages: 1. There are algae, moss and organic matter produced by oxidation on the sand surface. The surface viscosity is high and it is easy to absorb fine powder. It is difficult to estimate the proportion when mixed with cement. 2. The surface of the river sand contains alkaline substances such as detergents. When mixed with cement, it will shorten the hardening of the concrete, thus affecting its compressive and tensile strength.

[0005] 1. Clean water washing method, which uses clean water to wash, can be mass-produced, the equipment is simple, and the cost is low, but the surface viscosity of the sea sand is high, it is not easy to clean, the quality of the finished product is poor, and a lot of water resources are wasted at the same time

[0006] 2. Electrolysis removal method, which uses electroosmosis and ion decomposition method, has good cleaning effect, but the equipment cost is high, the cost is high, and it is not suitable for mass production

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