摘要
采用新研制的有机粘结剂CL3,并配以皂土,对包钢烧结厂铁精矿进行了实验室及工业规模的球团试验。实验室试验指标为:生球抗压大于98N/球,干球抗压大于588N/球,成品球抗压大于23kN/球,生球落下达4~62次/球,各项技术指标均优于单用皂土和KLP粘结剂。工业试验时,球团原料平均粒度为-0075mm占694%,加入006%CL3粘结剂,生球抗压达到421N/球,干球抗压5792N/球,成品球抗压199kN/球,生球落下362次/球。返料及返矿量分别比单用皂土粘结剂时减少725%和563%,明显提高了设备利用率和生产能力。成品球强度能满足高炉冶炼的要求。复合粘结剂用量比单用皂土时减少57%。
Laboratory and industrial pelletizing tests iron concentrate from the sintering plant of Baotou Iron and Steel Company are carried out by combined use of recentlydeveloped organic adhesive and bentonite. The laboratory results show that green pellets have a compression strength of above 98 N, dry pellets a compression strength of above 588 N, finished pellets a compression strength of above 23 kN and green pellets falling times of 4~62. All technical indexes obtained by combined use of CL3 and bentonite are higher than those by separate use of bentonite and KLP adhesive. In the industrial test, raw material for pellet production has a mean size of 694 percent minus 0075 mm. After addition of 006% CL3 adhesive, green pellets have a compression strength of 421 N, dry pellets a compression strength of 5792 N, finished pellets a compression strength of 199 kN and green pellets a falling time of 362. Compared with the process of pelletizing by using bentonite alone, recycled feeds from the production stages of green pellets and finished pellets by combined use of CL3 and bentonite are reduced by 725% and 563%, respectively. The compression strength of finished pellets can meet the requirements of blast furnace smelting, and the dosage of the compound adhesive is lower than that of bentonite 57%.
出处
《矿冶工程》
CAS
CSCD
北大核心
1998年第1期49-52,共4页
Mining and Metallurgical Engineering
关键词
铁精矿
球团
有机粘结剂
工业试验
Iron concentration, Pellet, Organic adhesive, Industrial test