METHOD OF ROASTING VALUABLE METAL-CONTAINING WASTE

• Main Authors: SAKAGUCHI KAZUHIRO, SAGA HIDEAKI, KADOTA KEIJI
• Format: Patent
• Language: English; Japanese
• Published: 29.11.2023
• Subjects: CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

To provide a method of roasting valuable metal-containing waste, which can stabilize the S concentration of roasted ore.SOLUTION: Provided is a method of roasting valuable metal-containing waste in which multiple kinds of valuable metal-containing waste are blended, oxidized, and roasted in a kiln, the method including: measuring at least the S concentration of each of the multiple kinds of valuable metal-containing waste (S1); blending the multiple kinds of valuable metal-containing waste so that the S concentration of the blended raw material is equal to or lower than M/V (S2, S3); and oxidizing and roasting the blended raw material in a kiln (S4). Here, M (kg/h) is the amount of S per unit time of the blended raw materials fed into the kiln, and V (kg/h) is the ore feeding rate of the kiln.SELECTED DRAWING: Figure 2 【課題】焙焼鉱のＳ濃度を安定化させることができる有価金属含有廃棄物の焙焼方法を提供する。【解決手段】複数種の有価金属含有廃棄物を配合してキルンで酸化焙焼する有価金属含有廃棄物の焙焼方法において、複数種の有価金属含有廃棄物それぞれの少なくともＳ濃度を測定し（Ｓ１）、配合原料のＳ濃度がＭ／Ｖ又はＭ／Ｖ以下になるように、複数種の有価金属含有廃棄物を配合し（Ｓ２，Ｓ３）、配合原料をキルンで酸化焙焼する（Ｓ４）。ここで、Ｍ（ｋｇ／ｈ）はキルンに投入する配合原料の単位時間当たりのＳ量、Ｖ（ｋｇ／ｈ）はキルンの給鉱速度である。【選択図】図２