Method for Producing a Sulfur Concrete Substance

Abstract

A sulfur-containing material in a melt state is stored in material hopper heated to a temperature within a preset temperature range of which a lower limit is equal to or above a melting point of sulfur. The stored sulfur-containing material is sucked by pressure generators and pulled out into cylinders heated to a temperature within the preset temperature range. The pulled out sulfur-containing material is pushed out from the cylinders under pressure applied by the pressure generator, and thereafter, the resultant material is injected into mold heated to a temperature within the preset temperature range. An injection port of the mold after the sulfur-containing material is fully injected is closed. By stopping heating of the mold, the sulfur-containing material is slowly cooled. After that, a modified sulfur concrete substance formed by cooling and solidifying the sulfur-containing material is taken out from the mold.

1 . A modified sulfur concrete substance producing method, comprising:
 storing a sulfur-containing material in a melt state in a material hopper heated to a temperature within a preset temperature range of which a lower limit is equal to or above a melting point of sulfur;   pulling the sulfur-containing material out of the material hopper, using a pressure generator, and into a cylinder heated to a temperature within the preset temperature range;   pushing the sulfur-containing material out from the cylinder under predetermined pressure applied by the pressure generator and injecting the material from an injection port into a mold having therein a cavity which can be hermetically sealed and the mold being heated to a temperature within the preset temperature range;   closing the injection port of the mold after the sulfur-containing material is fully injected in the cavity;   slowly cooling the sulfur-containing material injected in the cavity by stopping heating of the mold; and   taking out a modified sulfur concrete substance formed by cooling and solidifying the sulfur-containing material in the cavity from the mold.   
     
     
         2 . The modified sulfur concrete substance producing method according to  claim 1 , wherein the sulfur-containing material stored in the material hopper is agitated by an agitating blade provided in the material hopper. 
     
     
         3 . The modified sulfur concrete substance producing method according to  claim 1 , wherein said injecting the sulfur-containing material into the mold includes injecting the sulfur-containing material while applying vibration to the mold.