The General Principles Of Ore-dressing
Beneficiation methods must be "going all out to strive for greater
, faster, better and more economical results in building socialism," the general line and the party on economic construction, a series of principles and policies as a guide, specific analysis of technical and economic factors for consideration in decidingchoice, so that the selected line with the actual production of reliable, advanced indicators and economic rationality. The following are the general principles to consider.
(A) production requirements
A. The use of advanced beneficiation process, vigorously improve mineral indicators, and make full use of mineral resources to meet the smelting requirements. Two.Containing metal iron ore must take full account of the comprehensive utilization of all useful components, comprehensive utilization of tailings and waste water but also in the dressing production as much as possible.
3. Attention to labor protection and environmental health. 4. The method chosen should be simple and reliable, ease of production operations and management; complex must have significant technical and economic results.
5 The method chosen should be compatible with local construction conditions. 6.Production of concentrator process improvements, we must make full use of the existing production base, including plant, equipment and production experience.
7. Method chosen should be subject to the production or test proved to be effective and reliable.
(B) the nature of the ore
A. Depleted ore containing massive gangue, consideration should be given heavy media beneficiation, jig or dry magnetic separation methods such as removing the gangue.
Two. Mud ore should consider washing to remove the slime.
3. The recovery of strong magnetic minerals with weak magnetic separation method.
4. Weakly magnetic minerals according to their physical or chemical properties and dissemination size, with the re-election, roasting and magnetic separation, flotation, high intensity magnetic separation, electrostatic separation methods such as recycling.
5 Sulfide and phosphate materials are relatively easy to float minerals, commonly used in the flotation method of recycling.
6. Containing multi-metal iron ore and other multi-iron mineral iron ore is difficult to choose to use a single method, commonly used in several ways to the joint process. In order to obtain high-grade concentrate can be magnetite concentrate with anti-flotation or hit the shock fine sieve method. In order to increase the recovery rate can be considered Tailings and other processes for further recovery.
(B) weak magnetic iron ore
A. A single weakly magnetic iron ore sedimentary-metamorphic, sedimentary, hydrothermal and weathering hematite deposits, Ling iron ore, brown iron ore and hematite (iron mirror) a Ling such as iron ore. Such Ore production practice less, many kinds of minerals, a wide range of dissemination size used in mineral processing methods more commonly used method can be divided into two kinds:
(1) magnetic roasting magnetic or parallel with the re-election, flotation, high intensity magnetic separation process.
(2) re-election, flotation, high intensity magnetic separation, or a joint process.
(C) commonly used in mineral processing methods
Common ferrous metal methods can be divided into two types of single and I together. Single main magnetic (low intensity magnetic separation, high intensity magnetic separation), the magnetic separation of magnetic roasting, re-election, flotation, and electrostatic separation. The joint approach linking the different ways by various methods, sub-series and parallel connection of two kinds. The former is the different methods used in tandem to recover useful components; the latter is the use of different methods in parallel, each dealing with different grain size of the ore.
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by: nicole
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