High-grade iron ore concentrate grading method

The invention provides a high-grade iron ore concentrate grading method which comprises the following steps: firstly, crushing and screening raw ore, carrying out magnetic separation on ore particles meeting requirements through a dry magnetic separator, and carrying out secondary crushing on ore pa...

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Bibliographische Detailangaben
Hauptverfasser:	TIAN QINGFU, MENG RUIMIN, WANG MENGMENG, JI JINGQIANG, XIE FEI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CRUSHING, PULVERISING, OR DISINTEGRATING CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROMSOLID MATERIALS OR FLUIDS MILLING GRAIN PERFORMING OPERATIONS PREPARATORY TREATMENT OF GRAIN FOR MILLING SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS TRANSPORTING
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Beschreibung
Zusammenfassung:	The invention provides a high-grade iron ore concentrate grading method which comprises the following steps: firstly, crushing and screening raw ore, carrying out magnetic separation on ore particles meeting requirements through a dry magnetic separator, and carrying out secondary crushing on ore particles not meeting the requirements until the ore particles meet the requirements; the ore particles separated by the dry magnetic separator are put into high-pressure extrusion equipment to be compressed, and the ore particles which are not separated are discharged as aggregate; then the compressed ore particles are put into a high-pressure roller mill to be crushed and screened again, the ore particles meeting the requirements are subjected to magnetic separation through a wet magnetic separator, and the ore particles which do not meet the requirements are put into the high-pressure roller mill again to be crushed till the ore particles meet the requirements; and finally, the ore particles separated by the wet m