Gel retardant for preventing coal from self-ignition in coal mine

Application Number: 00110855
Application Date: 2000.01.25
Publication Number: 1307089
Publication Date: 2001.08.08
Priority Information:
International: C10L5/00
Applicant(s) Name: Dong Yuexi
Inventor(s) Name: Dong Yuexi;Sun Xikui;Zhang Chuanye
Patent Agency Code: 00000
Patent Agent:
Abstract Gel retardant is mixture of sodium silicate in 2-6 pts.wt. and coagulation accelerator in 10-32 pts.wt., including calcium hydroxide, clay and magnesium chloride. It is adsorbed onto surface of coal to isolate air, block leakage and react with self-ignition component it coal to produce salt not easy to ignite. It has retardant rate over 90 %, low cost, no toxicity, no smell, no pollution of downhole environment and no toxic side effect on human body.