(1. 中國(guó)科學(xué)院過(guò)程工程研究所，綠色過(guò)程與工程重點(diǎn)實(shí)驗(yàn)室，北京 100190；
2. 中國(guó)科學(xué)院大學(xué) 國(guó)際學(xué)院，北京 100049；
3. 河鋼股份有限公司承德分分公司，承德 067102；
4. 河鋼集團(tuán)有限公司，石家莊 050023)
摘 要: 針對(duì)現(xiàn)有釩渣鈉化焙燒提釩工藝釩提取率低、鉻不能提取、三廢環(huán)境治理代價(jià)高等難題，中科院過(guò)程工程研究所和河鋼承鋼開(kāi)發(fā)釩渣亞熔鹽法釩鉻共提清潔生產(chǎn)工藝，于2017年建成5萬(wàn)t生產(chǎn)線，目前已運(yùn)行兩年以上，取得可靠的工業(yè)化運(yùn)行和環(huán)境保護(hù)檢測(cè)數(shù)據(jù)。本文通過(guò)選取資源能源利用、生產(chǎn)工藝技術(shù)、污染物排放、資源綜合利用、產(chǎn)品特征、環(huán)境管理6類一級(jí)指標(biāo)及其下屬的27個(gè)二級(jí)指標(biāo)，對(duì)該工藝進(jìn)行清潔生產(chǎn)水平分析。結(jié)果表明：工藝清潔生產(chǎn)指數(shù)達(dá)98.02，屬于清潔生產(chǎn)先進(jìn)水平。工藝可在溫和條件下實(shí)現(xiàn)釩鉻的高效清潔提取，為我國(guó)36億t高鉻型釩鈦磁鐵礦的利用提供關(guān)鍵解決方案，可引領(lǐng)釩化工產(chǎn)業(yè)的綠色升級(jí)。
關(guān)鍵字: 亞熔鹽；釩鉻共提；清潔生產(chǎn)；釩鈦磁鐵礦
（1. CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;
2. International College, University of Chinese Academy of Sciences, Beijing 100049, China;
3. Chengde Iron and Steel Group Co., Ltd., HBIS Group Co., Ltd., Chengde 067102, China;
4. HBIS Group Co., Ltd., Shijiazhuang 050023, China）
Abstract:The traditional sodium roasting process has a number of disadvantages including low vanadium and chromium extraction rate, generation of waste water and toxic residue. Recently, a new vanadium production process based on the sub-molten salt (SMS) technology was developed by IPE, CAS and HBIS Group Co., Ltd. And a 50 kt demonstration plant was built in 2017. After two years operation, many reliable industrial data were obtained. In this paper, the cleaner production level of new technology was analyzed by selecting six first-class indexes, i.e. resource and energy utilization, production technology, pollutant discharge, comprehensive utilization of resources, product characteristics, environmental management and 27 second-class indexes under them. The analysis results show that the cleaner production level of new process is 98.02, which means that this technology belongs to high level of cleaner production. The new technology could realize efficient extraction of both vanadium and chromium under mild reaction condition, providing technical supports for the effective utilization of the 3.6 billion tons of high-chromium containing vanadium titano-magnetite ores in China and can be the green production leader of vanadium chemical industry.
Key words: sub-molten salt; vanadium and chromium co-extration; cleaner production; vanadium-titanium magnetite
