Abstract: To efficiently utilize the complex coexisting dolomite resources in a certain area of Haicheng,Liaoning Prov ince,this study conducted a systematic process mineralogy research on the ore by comprehensively applying analytical methods such as X-ray fluorescence spectrometry (XRF),X-ray diffraction (XRD),and the automatic mineral analysis system (AM ICS).The results show that the main useful mineral in the ore is dolomite,with a content of 89.88%.The main gangue mineral is quartz,with a content of 6.16%.Dolomite is mostly present in irregular block and granular forms,and its distribution rela tionship with quartz is complex. Its monomer dissociation is good,and the distribution rate in the dissociation degree greater than 90% range is as high as 80.06% (cumulative 94.41%).The elemental state of existence indicates that magnesium (96.46%) and calcium (99.96%) are highly concentrated in dolomite,while silicon (87.31%) is mainly distributed in quartz.This study clarifies the process mineralogy characteristics of the ore and points out that the effective separation of dolo mite and quartz is the key to resource utilization.The research results can provide an important theoretical basis for the formu lation of subsequent beneficiation process schemes.

Key words: dolomite,process mineralogy,dissemination characteristics,liberation degree,occurrence state