| 摘要 |
PROBLEM TO BE SOLVED: To purify sand at a low cost by effectively heating sand with a burner. SOLUTION: In this sand purification device, a first combustion chamber 30 which sand will not enter is formed between the rear end 22 of a purification cylinder 20 and a burner 40, and an air guide hole is formed in the first combustion chamber 30. The top 32 of the first combustion chamber 30 is smaller than the inner diameter of the rear end 22 of the purification cylinder 20 and is inserted into the rear end 22 of the purification cylinder 20. And a shooter 11 to discharge sand purified by the purification cylinder 20 is installed in the bordering area between the purification cylinder 20 and the first combustion chamber 30. |
