公开(公告)号：US20020112968A1

公开(公告)日：2002-08-22

申请号：US09873202

申请日：2001-06-05

申请人： CHIYODA CORPORATION

发明人： Yoshimi Shiroto ,  Ataru Wakabayashi

IPC分类号： H01M008/20 ,  C01G031/00 ,  C01G033/00 ,  C22B034/20 ,  C25B001/00

CPC分类号： H01M8/188 ,  C01G31/00 ,  C22B3/08 ,  C22B7/001 ,  C22B7/007 ,  C22B34/225 ,  H01M4/5825 ,  Y02E60/528 ,  Y02P10/214 ,  Y02P10/23 ,  Y02P10/234 ,  Y02P20/129 ,  Y02P70/56

摘要： A process for the production of a vanadium compound from carbonaceous residues containing vanadium, which includes the steps of: (a) combusting the carbonaceous residues at a temperature of 500-690null C. in an oxygen-containing gas to form vanadium-containing combustion residues; (b) heating the vanadium-containing combustion residues at a temperature T in null C. under an oxygen partial pressure of at most T in kPa wherein T and P meet with the following conditions: log10(P)nullnull3.45null10null3nullTnull2.21 500nullTnull1300 to obtain a solid product containing less than 5% by weight of carbon and vanadium at least 80% of which is tetravalent vanadium oxide; (c) selectively leach tetravalent vanadium ion with sulfuring acid at pH in the range of 1.5-4; (d) separating a liquid phase from the leached mixture; (e) adding an alkaline substance to the liquid phase to adjust the pH thereof in the range of 4.5-7.5 and to selectively precipitate vanadium ion as a tetravalent vanadium compound; and (f) separating the precipitates.

摘要翻译： 一种从含有钒的碳质残渣中生产钒化合物的方法，其包括以下步骤：（a）在含氧气体中在500-690℃的温度下将含碳残余物燃烧以形成含钒燃烧 残留物 （b）在温度T℃下，在最高T（kPa）的氧分压下加热含钒燃烧残余物，其中T和P满足以下条件：<段落lv1 =“0”> < line-formula> log10（P）= - 3.45x10-3xT + 2.21 <段落lvl =“0”> 500 <= T <= 1300 得到含有小于5重量％的碳和钒的固体产物，其中至少80％是四价钒氧化物; （c）在pH为1.5-4的范围内用硫酸选择性浸出四价钒离子; （d）从浸出的混合物中分离液相; （e）向液相中加入碱性物质以将pH调节至4.5-7.5的范围内，并选择性地沉淀作为四价钒化合物的钒离子; 和（f）分离沉淀物。