Environment protecting type coal surface solidifying agent and preparation process thereof

Abstract

The present invention relates to one kind of environment friendly coal surface curing agent and its preparation process. The coal surface curing agent consists of PVA 1-2 wt%, 10 wt% concentration hydrogen peroxide solution 0.3-0.6 wt%, starch 5-7 wt%, 5 wt% concentration borax or boric acid solution 2-5 wt%, ferrous sulfate 0.005-0.01 wt%, 10 wt% concentration sodium hydroxide solution 4-8 wt% and water for the rest. It is sprayed to the surface of coal under transportation so as to form one curing layer avoiding dust pollution and coal loss. It has no influence on coal quality and is environment friendly.

Description

technical field [0001] The invention relates to an environment-friendly coal surface curing agent and a preparation method thereof. The curing agent is mainly used for railway coal transportation to prevent coal loss and environmental pollution during transportation. Background technique [0002] At this stage, China's coal is generally transported by open car in railway transportation. During the transportation process, due to the bumps caused by the roadbed, turnouts and rail facilities, coupled with the wind force, especially when the train enters the tunnel, due to the "piston wind" effect, it will form an instant strong disturbance air flow, and the fine coal powder on the surface will The particles are blown away from the vehicle body, fall onto the road surface, and then be rolled by subsequent vehicles to form secondary dust with smaller particle size and higher concentration. As a result, the coal dust on the surface of the coal seam in the vehicle is scattered, re...

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Problems solved by technology

And it also produces serious pollution to the body of other vehicles passing by.

Secondly, it has a great impact on the equipment

Coal dust has seriously polluted the track bed of railway lines, aggravating the degree of compaction. In heavily polluted sections, coal dust has buried fasteners, sleeper plates and other parts, which has brought considerable difficulties to the daily maintenance of the engineering department. Serious corrosion on rails and fasteners, causing safety hazards

Due to the pollution of coal dust, the daily maintenance of signal communication equipment is very difficult

It often causes short circuit and discharge of power supply insulators, which shortens the service life and brings great inconvenience to daily maintenance operations

Third, it poses a threat to driving safety

The thickness of coal particles increases at a rate of about 20cm per month at the entrance of the tunnel. The concentration of coal dust in the tunnel is suffocating and the visibility is less than 10m. The temperature of the working environment of electrical equipment in the locomotive rises, which often causes equipment failure, reduces its integrity rate and safety, and seriously threatens the safety of train operation

Fourth, it seriously deteriorates the environment for employees and passengers

A large amount of coal dust in the tunnel invaded the locomotive crew room, deteriorating the working environment of the crew, and the raised coal dust caused dust pollution to the roadside stations, crossings and other environments, especially for the public works, electricity and power supply workers who often work in the tunnel serious harm to the health of

For some ordinary vehicles that are not well sealed, coal dust flies into the vehicle, which poses a serious threat to the health of passengers

Fifth, there are potential serious security risks

However, in an environment with extremely dry natural conditions, due to rapid evaporation, frequent spraying, time-consuming and labor-consuming, and a large amount of water, not only the cost is high, but it is also difficult to continuously meet the requirements of environmental quality

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