高炉出铁时使铁和渣分开用的沙口(又名撇渣器),长期以来都是固定式的,共构造:内砌耐火砖,砖上涂一层耐火泥,沙口再用砂子堵严。出铁时沙口受到融熔渣铁的冲刷,每次放出沙口残铁后,工人同志冒着高温、热气、灰尘进行修补,一周还得大修一次;同时沙口内堵有大量砂子,影响着铁水的质量,且淡费大量的砂子。为改善劳动条件,减 Sand mouth (also known as skimmer) that separates iron from slag when the blast furnace is tapped has long been a fixed structure with a total construction of refractory bricks, a layer of refractory mud on the bricks, sand in the sand mouth Blocking. When the iron is thrown, the sand mouth is scoured by the molten iron slag. After each time the sand iron is discharged, the gay workers brave the heat, hot air and dust to make repairs once a week. At the same time, a large amount of sand is blocked in the sand mouth, affecting The quality of hot metal, and a large amount of light sand. To improve working conditions, less