Environment protection preparation for preventing and treating open-air coal fly dust and preparation method

Abstract

The invention relates to an environment protection preparation for preventing and treating open-air coal fly dust and a preparation method. The environment protection preparation has the following recipe (according to the mass volume ratio): 0.25 percent to 5.0 percent of water glass (sodium silicate), 0.25 percent to 5.0 percent of PVA (polyvinyl alcohol), 0.05 percent to 5.0 percent of polyaspartic acid and water as solvents. The design of the invention uses natural mineral substances, high molecular compounds and biological materials as raw materials, uses the mutual enhancing effect of the three kinds of substances in the adhesion process between solid grains for realizing the effects of glomeration or hardening of coal slag grains, and the preparation with the environment-friendly performance is prepared. The operation is convenient and simple, and the coal fly ash is avoided through the glomeration or the hardening of the coal slag grains, the environment is protected, the loss is reduced, and the invention has wide application procespects.

Description

technical field [0001] The invention relates to the technical field of preventing and controlling coal dust during open pit mining, storage and transportation of coal mines. In particular, it relates to an environment-friendly preparation capable of agglomerating or hardening fine particulate matter such as soil and cinders and a preparation method thereof. Background technique [0002] my country has abundant coal resources, such as Xinjiang, Shanxi, Inner Mongolia and other places, among which Xinjiang has proven reserves of 1621 billion tons, accounting for more than 30% of the country's total coal reserves. With the development of society and economy, my country's demand for coal resources is increasing day by day, and the mining scale of coal mines has increased significantly. The environmental pollution and economic losses caused by the dust in the process of coal mining, storage and transportation cannot be ignored. Especially in Xinjiang and Inner Mongolia, where t...

AI Technical Summary

Problems solved by technology

The dust in the transportation process not only caused the loss of coal quantity, but also further increased the scope of coal dust pollution. A large amount of coal dust blown up under the influence of eddy currents would even stay in the tunnel, which brought serious safety hazards

[0003] In response to these problems, most coal mines will sprinkle water to prevent the dust from flying, but the water evaporates quickly, which can only improve the dust phenomenon in a short time, and the dust around the coal mine is mainly composed of small particles of cinders, which have lower water retention performance than soil , therefore, simply sprinkling water to suppress the flying of coal dust is ineffective

In addition, for the bulk coal transportation process, there are three main ways to suppress dust: first, the method of adding a cover to each carriage to suppress the flying of coal dust, but the cost is high and the effective load is low, which brings troubles to the loading and unloading process

Second, tarpaulin covering method, the process of adding the cover needs to be carried out manually, which affects the efficiency of railway transportation and increases the cost

Third, the sprinkling method, like sprinkling around coal mines, is difficult to achieve a more ideal effect, and at the same time wastes water resources

Patent application number: 200710306831.1, which reduces the number of reagents used to 4, but also needs to be reacted at high temperature in the reactor, and the production process is more complicated

There are also some similar patents, but generally the composition is complex and requires certain chemical reactions, and most patents use strong alkali or corrosive substances, which may have a certain impact on the environment

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