Method for solidifying solid fossil fuels and solidified materials prepared thereby

Abstract

Disclosed herein are a method for solidifying solid fossil fuel and a solidified material obtained thereby. The solidified material is prepared by mixing at least one solid fossil fuel with 5-8 parts by weight, based on 100 parts by weight of the solid fossil fuel, of a solidifying agent, and 1-4 parts by weight, based on 100 parts by weight of the solidifying agent, of aqueous acrylic resin. When this solidifying method is used, a solidified material, which can maintain the durability and high-temperature stability of a solidified material according to the prior furnace process using only coking coal as a raw material and has high heating value, can be prepared using a single solid fossil fuel or mixture thereof, including bituminous coal, anthracite coal and powdery coke.

1 . A method for solidifying solid fossil fuel using a solidifying agent, the method comprising the steps of:
 (1) mixing at least one solid fossil fuel with 5-8 parts by weight, based on 100 parts by weight of the solid fossil fuel, of a solidifying agent, and 1-4 parts by weight, based on 100 parts by weight of the solidifying agent, of aqueous acrylic resin;   (2) shaping the mixture prepared in the step (1); and   (3) heating the shaped material prepared in the step (2) to a temperature of 150-200° C. to prepare a solidified material,   wherein the solidifying agent contains, based on the total weight of the solidifying agent, 34-52 wt % of straight asphalt, 0.1-0.3 wt % of an emulsifier for asphalt, 0.2-0.4 wt % of hydrochloric acid, 0.03-0.05 wt % of calcium chloride, and a balance of water.   
   
   
       2 . The method of  claim 1 , wherein the solid fossil fuel is coal or coal-based fuel. 
   
   
       3 . The method of  claim 2 , wherein the solid fossil fuel is powdery coke, anthracite coal, or a mixture of two or more of powdery coke, bituminous coal and anthracite coal. 
   
   
       4 . A method for solidifying solid fossil fuel using a solidifying agent, the method comprising the steps of:
 (1) mixing bituminous coal with 5-8 parts by weight, based on 100 parts by weight of the bituminous coal, of a solidifying agent, 1-3 parts by weight, based on 100 parts by weight of the bituminous coal, of cement, and 1-4 parts by weight, based on 100 parts by weight of the solidifying agent, of aqueous acrylic resin;   (2) shaping the mixture prepared in the step (1); and   (3) heating the shaped material prepared in the step (2) to a temperature of 150-200° C. to prepare a solidified material,   wherein the solidifying agent contains, based on the total weight of the solidifying agent, 34-52 wt % of straight asphalt, 0.1-0.3 wt % of an emulsifier for asphalt, 0.2-0.4 wt % of hydrochloric acid, 0.03-0.05 wt % of calcium chloride, and a balance of water.   
   
   
       5 . A solidified material of solid fossil fuel, which is prepared by mixing at least one solid fossil fuel (except for a single material of bituminous coal) with 5-8 parts by weight, based on 100 parts by weight of the solid fossil fuel, of a solidifying agent, and 1-4 parts by weight, based on 100 parts by weight of the solidifying agent, of aqueous acrylic resin,
 wherein the solidifying agent contains, based on the total weight of the solidifying agent, 34-52 wt % of straight asphalt, 0.1-0.3 wt % of an emulsifier for asphalt, 0.2-0.4 wt % of hydrochloric acid, 0.03-0.05 wt % of calcium chloride, and a balance of water.   
   
   
       6 . A solidified material of solid fossil fuel, which is prepared by mixing bituminous coal with 5-8 parts by weight, based on 100 parts by weight of the bituminous coal, of a solidifying agent, 1-3 parts by weight, based on 100 parts by weight of the bituminous coal, of cement, and 1-4 parts by weight, based on 100 parts by weight of the solidifying agent, of aqueous acrylic resin,
 wherein the solidifying agent contains, based on the total weight of the solidifying agent, 34-52 wt % of straight asphalt, 0.1-0.3 wt % of an emulsifier for asphalt, 0.2-0.4 wt % of hydrochloric acid, 0.03-0.05 wt % of calcium chloride, and a balance of water.