A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
METHOD FOR RECOVERING NOBLE METAL FROM INCINERATION ASH USING CEMENT PRODUCTION FACILITY
To provide a method for efficient recovery of noble metals from incineration ashes by using a cement production facility while suppressing scattering of dioxin and odor and vibration and abrasion of a mill.SOLUTION: A method for recovering noble metals from incineration ashes using a cement production facility equipped with a roller mill for pulverization of a cement raw material containing one or more kinds selected from limestone and silica rock, a preheater for preheating the cement raw material pulverized product introduced from the roller mill, and a cement kiln for firing the cement raw material pulverized product introduced from the preheater includes: an incineration ash pretreatment step of breaking the incineration ashes, subjecting the broken products to magnetic force screening to recover a non-magnetically attracted material, and separating the non-magnetically attracted material into a first non-magnetically attracted material and a second non-magnetically attracted material based on a physical property or a chemical property of the non-magnetically attracted material; and a cement raw material pulverization step of pulverizing the first non-magnetically attracted material by a roller mill together with a cement raw material and separating them into a mill expulsion and a mill refined flour. The mill expulsion is then recovered.SELECTED DRAWING: Figure 1
【課題】セメント製造設備を用いながら、ダイオキシン及び臭気の飛散、ミルの振動及び摩耗を抑制しつつ焼却灰からの貴金属の効率的回収が可能な方法を提供する。【解決手段】石灰石及びケイ石から選択される１以上を含むセメント原料を粉砕するローラーミルと、ローラーミルから導入されたセメント原料粉砕物を予熱するプレヒータと、プレヒータから導入されたセメント原料粉砕物を焼成するセメントキルンとを有するセメント製造設備を用いた焼却灰からの貴金属回収方法であって、焼却灰を破砕し、破砕物を磁力選別に供して非磁着物を回収し、非磁着物の物理的性状又は化学的性状に基づいて非磁着物を第１の非磁着物と第２の非磁着物とに分別する焼却灰前処理工程と、第１の非磁着物をセメント原料とともにローラーミルで粉砕してミル排石とミル精粉とに分離するセメント原料粉砕工程を含み、ミル排石を回収する、貴金属回収方法である。【選択図】図１
METHOD FOR RECOVERING NOBLE METAL FROM INCINERATION ASH USING CEMENT PRODUCTION FACILITY
To provide a method for efficient recovery of noble metals from incineration ashes by using a cement production facility while suppressing scattering of dioxin and odor and vibration and abrasion of a mill.SOLUTION: A method for recovering noble metals from incineration ashes using a cement production facility equipped with a roller mill for pulverization of a cement raw material containing one or more kinds selected from limestone and silica rock, a preheater for preheating the cement raw material pulverized product introduced from the roller mill, and a cement kiln for firing the cement raw material pulverized product introduced from the preheater includes: an incineration ash pretreatment step of breaking the incineration ashes, subjecting the broken products to magnetic force screening to recover a non-magnetically attracted material, and separating the non-magnetically attracted material into a first non-magnetically attracted material and a second non-magnetically attracted material based on a physical property or a chemical property of the non-magnetically attracted material; and a cement raw material pulverization step of pulverizing the first non-magnetically attracted material by a roller mill together with a cement raw material and separating them into a mill expulsion and a mill refined flour. The mill expulsion is then recovered.SELECTED DRAWING: Figure 1
【課題】セメント製造設備を用いながら、ダイオキシン及び臭気の飛散、ミルの振動及び摩耗を抑制しつつ焼却灰からの貴金属の効率的回収が可能な方法を提供する。【解決手段】石灰石及びケイ石から選択される１以上を含むセメント原料を粉砕するローラーミルと、ローラーミルから導入されたセメント原料粉砕物を予熱するプレヒータと、プレヒータから導入されたセメント原料粉砕物を焼成するセメントキルンとを有するセメント製造設備を用いた焼却灰からの貴金属回収方法であって、焼却灰を破砕し、破砕物を磁力選別に供して非磁着物を回収し、非磁着物の物理的性状又は化学的性状に基づいて非磁着物を第１の非磁着物と第２の非磁着物とに分別する焼却灰前処理工程と、第１の非磁着物をセメント原料とともにローラーミルで粉砕してミル排石とミル精粉とに分離するセメント原料粉砕工程を含み、ミル排石を回収する、貴金属回収方法である。【選択図】図１
METHOD FOR RECOVERING NOBLE METAL FROM INCINERATION ASH USING CEMENT PRODUCTION FACILITY
セメント製造設備を用いた焼却灰からの貴金属回収方法
TAKIZAWA AKIRA (author) / TAKEMOTO TOMONORI (author) / SUGISAWA KEN (author) / SUEMATSU RYOICHI (author) / ISHIDA YASUYUKI (author)
2023-07-24
Patent
Electronic Resource
Japanese
Method and facility for recovering CO2 gas in cement manufacturing facility
| European Patent Office | 2016
METHOD AND FACILITY FOR RECOVERING CO2 GAS IN CEMENT MANUFACTURING FACILITY
| European Patent Office | 2016
| European Patent Office | 2021