CAJ | 학술논문

综述了国内外煤灰中金的研究进展，详细探讨了煤灰中金的分布规律，煤燃烧时金的迁移规律、金挥发的影响因素与利用可行性。世界范围内绝大多数煤灰中金含量比原煤中要富集，仅发现部分地区煤灰中金含量比原煤中低。煤中金的赋存状态、成煤地质地球化学环境及燃烧条件是影响燃煤过程中金挥发的主要因素，其中赋存状态对燃煤过程中金的再分配起控制作用。煤灰中金储量的初步计算结果表明，黔西南煤与煤灰中金颇具利用潜力。
종술료국내외매회중금적연구진전，상세탐토료매회중금적분포규률，매연소시금적천이규률、금휘발적영향인소여이용가행성。세계범위내절대다수매회중금함량비원매중요부집，부발현부분지구매회중금함량비원매중저。매중금적부존상태、성매지질지구화학배경급연소조건시영향연매과정중금휘발적주요인소，기중부존상태대연매과정중금적재분배기공제작용。매회중금저량적초보계산결과표명，검서남매여매회중금파구이용잠력。
Recent researches on Au in coal ash were summarized in this paper,including the distribution law and the migration rule of gold in coal ash,as well as the influencing factors on volatility and use feasibility of Au in the pro-gress of coal combustion.Au content in coal ash is much higher than that in the raw coal in most cases worldwide, only a small number of opposite cases are found in certain places.Occurrence of Au in coal,geological-geochemical environment of coal-forming and combustion conditions are the main factors controlling the volatility of gold in coal combustion,while the occurrence of Au in coal dominates the redistribution of Au.Through preliminary calcula-tion,gold in coal ash is expected to have a considerable utilization potential in the southwestern Guizhou Province.