球团用钙基膨润土干法钠化改性研究

现代矿业 ›› 2022, Vol. 38 ›› Issue (08): 188-.

球团用钙基膨润土干法钠化改性研究

曾榕清^1，2 覃祚明^1，2 张丕慧^1，2 程辉^1，2张修华^1，2 蒙雪忍^1，2

1. 柳州华锡有色设计研究院有限责任公司；2. 铟锡资源高效利用国家工程实验室

出版日期:2022-08-25 发布日期:2023-06-07

Research on Sodium Modification of Calcium Bentonite for Preparation Pellets by Dry Method

ZENG Rongqing^1，2 QIN Zuoming^1，2 ZHANG Pihui^1，2 CHENG Hui^1，2 ZHANG Xiuhua^1，2 MENG Xueren^1，2#br#

1. Liuzhou Huaxi Design ＆ Research Institute of Non-ferrous Metals Co.，Ltd.；2. National Engineering Laboratory for Efficient Utilization of Indium and Tin Resource

Online:2022-08-25 Published:2023-06-07

摘要/Abstract

摘要： 以广西某企业A、B2 种钙基膨润土为原料，采用干法钠化工艺，探讨了A、B2 种膨润土配比、钠化剂种类及其添加量、高速混合时间、陈化时间对钠化效果的影响，制备出性能显著的钠基膨润土。结果表明，在钠化剂碳酸钠用量为3%，A、B 膨润土配比为2∶1，高速混匀时间为30 s，室温陈化时间为15 h的条件下，获得的钠基膨润土100 g吸蓝量由原来的26.8 g提高至32.1 g，吸水率由原来的190% 提高至580%，膨胀容由原来的5.0 mL/g 提高至36.0 mL/g，符合冶金球团用膨润土的质量要求（《膨润土》（GB/T 20973—2020）），可用于冶金球团用黏结剂。该干法钠化工艺具有操作简单、能耗低、经济实用、生产周期短的特点。

关键词: 钙基膨润土, 钠化改性, 干法, 冶金球团

Abstract: The two kinds of calcium bentonite of A and B produced from a certain company in Guangxi Province were used as raw materials，and the dry sodium modification process was adopted to ex⁃ plore the influence of the ratio of two bentonite，the type and dosage of sodium agent，the high speed mix⁃ ing time，and the aging time on the sodium modification effects. Then，the sodium bentonite with excellent physicochemical properties was prepared. The results showed that in the condition of the sodium agent sodi⁃ um carbonate dosage of 3%，the mass ratio of A and B bentonite of 2∶1，the high speed mixing time of 30 s，and the aging time at room temperature of 15 h，the blue absorption of 100 g modified bentonite in⁃ creased from 26.8 g to 32.1 g. The water absorption increased from 190% to 580%，and the expansion vol⁃ ume increased from 5.0 mL/g to 36.0 mL/g，which meet the quality requirements of bentonite for metallurgi⁃ cal pellets( Bentonite (GB/T 20973—2020)) and can be used as a binder for metallurgical pellets. The dry sodium modification process has the characteristics of simple operation，low energy consumption，economi⁃ cal and practical，and short production cycle.

Key words: calcium bentonite, sodium modification, dry method, metallurgical pellets

曾榕清, 覃祚明, 张丕慧, 程辉, 张修华, 蒙雪忍. 球团用钙基膨润土干法钠化改性研究[J]. 现代矿业, 2022, 38(08): 188-.

ZENG Rongqing, QIN Zuoming, ZHANG Pihui, CHENG Hui, ZHANG Xiuhua, MENG Xueren. Research on Sodium Modification of Calcium Bentonite for Preparation Pellets by Dry Method[J]. Modern Mining, 2022, 38(08): 188-.

[1]	尹明梁光传王桂芳邹志斌叶涛. 吸附剂对选矿废水中丁基黄药的吸附性能研究* [J]. 现代矿业, 2024, 40(03): 112-116.
[2]	刘婷, . 某铅锌矿尾矿库尾矿回采方案研究*[J]. 现代矿业, 2020, 36(08): 94-.
[3]	张凡凡, 陈超, 相利学. 基于磷石膏的半干法制备α半水石膏试验[J]. 现代矿业, 2016, 32(10): 72-74+77.
[4]	韩志龙. 钙基膨润土钠化与应用[J]. 现代矿业, 2011, 27(07): 93-94+101.

扫码分享