MLA在广东斑岩型锡石矿嵌布特征及赋存状态研究中的应用

doi:10.12034/j.issn.1009-606X.218341

过程工程学报 ›› 2019, Vol. 19 ›› Issue (5): 1006-1013.DOI: 10.12034/j.issn.1009-606X.218341

MLA在广东斑岩型锡石矿嵌布特征及赋存状态研究中的应用

胡海祥¹,李广^2,3*

1. 江西理工大学应用科学学院，江西赣州 341000 2. 紫金矿业集团股份有限公司，福建上杭 364200 3. 紫金矿业低品位难处理黄金资源综合利用国家重点实验室，福建上杭 364200

收稿日期:2018-12-27 修回日期:2019-02-15 出版日期:2019-10-22 发布日期:2019-10-22
通讯作者: 胡海祥 hhxok@qq.com
基金资助:
国家自然科学基金项目;江西省教育厅科技项目;江西省自然科学基金项目

Application of MLA in study of characteristics and occurrences of porphyry tin ore in Guangdong province

Haixiang HU¹, Guang LI^2,3*

1. School of Applied Sciences, Jiangxi University of Science and Technology, Ganzhou, Jiangxi 341000, China
2. Zijin Mining Group Co., Ltd., Shanghang, Fujian 364200, China
3. State Key Laboratory of Comprehensive Utilization of Low Grade Refractory Gold Ores (Zijin Mining Group Co., Ltd.), Shanghang, Fujian 364200, China

Received:2018-12-27 Revised:2019-02-15 Online:2019-10-22 Published:2019-10-22
Contact: Xiang haiHU hhxok@qq.com
Supported by:
National Natural Science Foundation of China

摘要/Abstract

摘要： 利用矿物自动分析系统(MLA)和X射线荧光光谱仪、原子吸收分光光度计等对广东某斑岩型锡矿小于2 mm的原矿进行工艺矿物学研究，考察矿物组成、嵌布粒度、连生及包裹关系。结果表明，锡石主要呈细粒浸染状嵌布于脉石矿物中，嵌布粒度细微，最大粒度约为0.250 mm，最小为0.001 mm，主要集中在0.020?0.090 mm之间，单体解离度仅为9.98%，连生体主要与石英、黄玉连生。约93%的锡石(硬度6.5)被石英(硬度7)、黄玉(硬度8)包裹或与之连生，属难磨难选矿石，原矿伴有少量钼、铋、钨、铜等有价元素。选矿原则流程可确定为优先浮选回收硫化矿(钼、铋、铜、钨)，窄级颗粒分别(或依次)重选回收锡石。

关键词: 斑岩型锡矿, 工艺矿物学, 矿物自动分析系统（MLA）, 解离度分析

Abstract: The valuable minerals of porphyry tin ore in Guangdong province were mainly cassiterite with a small amount of valuable elements such as molybdenum, bismuth, tungsten and copper. Due to the fine grain size of cassiterite, it is disseminated and embedded in gangue minerals, as well as it is extremely difficult to recover cassiterite and the recovery rate in the production process is low. In order to find out the characteristics and occurrences of cassiterite, the technological mineralogy of less than 2 mm raw ore was studied by using the mineral liberation analyzer (MLA), X-ray fluorescence spectrometer and atomic absorption spectrophotometer, which were used to identify the mineral composition, disseminated grain size, association and encasing relationship. The results showed that cassiterite was mainly disseminated and embedded in gangue minerals with fine grain size, the maximum particle size was about 0.250 mm, the minimum was 0.001 mm, the size mainly distribution range was 0.020?0.090 mm, the monomer dissociation was only 9.98%, and the connective bodies were mainly associated with quartz and topaz. About 93% of cassiterite (hardness 6.5) was wrapped by or linked with quartz (hardness 7) and topaz (hardness 8), it belonged to the difficult grinding and separating ore, the raw ore was accompanied by a small amount of valuable elements such as molybdenum, bismuth, tungsten and copper. The principle flowsheet could be determined as the priority flotation to recover sulfide ore (molybdenum, bismuth, copper, tungsten), and the narrow-grade particles were reselected to recover cassiterite respectively (or successively). The research results provided important basis for the design of flotation, gravity separation (including spiral chute, shaker and centrifuge) and other combination of beneficiation process.

Key words: porphyry tin ore, technological mineralogy, mineral Liberation Analyzer(MLA), dissociation analysis

胡海祥李广. MLA在广东斑岩型锡石矿嵌布特征及赋存状态研究中的应用[J]. 过程工程学报, 2019, 19(5): 1006-1013.

Haixiang HU Guang LI. Application of MLA in study of characteristics and occurrences of porphyry tin ore in Guangdong province[J]. Chin. J. Process Eng., 2019, 19(5): 1006-1013.

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MLA在广东斑岩型锡石矿嵌布特征及赋存状态研究中的应用

Application of MLA in study of characteristics and occurrences of porphyry tin ore in Guangdong province

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