A kind of high-performance environment-friendly antifreeze liquid for hydraulic support and preparation method thereof

Abstract

The invention provides a high-performance environment-friendly antifreeze for hydraulic supports, which uses glycerin, castor oil polyoxyethylene ether, boric acid, potassium hydroxide and water at 60 degrees Celsius to generate extreme pressure lubrication In addition, ethylene glycol is used as the main anticoagulant, and sodium nitrite is used as the antirust agent. The ethylene glycol, extreme pressure lubricant, sodium nitrite and water are mixed according to a certain proportion, and the temperature is 35-40 degrees Celsius. Stir and adjust until uniform and transparent to obtain the antifreeze liquid for hydraulic supports with stable performance. The antifreeze liquid of the present invention has a lower anti-condensation point temperature, a more stable use state, better lubrication, anti-rust, extreme pressure and compatibility performance, and simpler production; the production cycle can be shortened by half, and the production process can get rid of the long-term high-temperature saponification During the reaction process, the cost of materials is reduced, and it is safer and more environmentally friendly; the product will not be mixed with insoluble matter, and the product quality is high.

Description

technical field [0001] The invention belongs to the technical field of coal mining, and in particular relates to a high-performance, environment-friendly antifreeze for hydraulic supports and a preparation method. Background technique [0002] Hydraulic support is one of the key equipment in fully mechanized mining face, and it is the most important underground roof support equipment, which is used to prevent roof collapse in goaf. The support, elevation, forward movement, backward slide and overload protection of the hydraulic support all rely on pressure liquid - high water content hydraulic fluid. Under normal circumstances, high-water-containing hydraulic fluid is the power transmission medium after the emulsified oil or concentrated liquid passes through the liquid. Due to the different use environments in coal mines, it is difficult to grasp the concentration during the liquid preparation process, and because the manufacturer’s formula system is different. , The refra...

AI Technical Summary

Problems solved by technology

Antifreeze for hydraulic supports can meet the requirements of low freezing point, but the antifreeze for hydraulic supports in the prior art is different from emulsified oil or concentrated liquid for hydraulic supports, antifreeze is used directly without dilution, so for the user It is said that while the use is easier, the cost will increase; the existing antifreeze is basically made of high-temperature saponification, using a variety of raw materials for reconciliation, the production time is long, the production process is unsafe, there are pollution problems, and the production efficiency is low. not tall

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