Fig. 1
From: Extraction of arsenic from fine dust of copper smelters by reduction roasting with natural gas
Layout of a laboratory installation for dust roasting: 1 – electric furnace Nabertherm 50/250/12 with temperature-controlled controller B410; 2 – quartz reactor; 3 – alundum boat crucible with a sample; 4 – cylinder with CH4; 5 – valve; 6 – rotameter RM-GS 004 KL4; 7 – thermocouple PP-1; 8 – secondary device KSP-4; 9 – vessel for absorbing gases