(1) Production requirements

1. The advanced beneficiation process is adopted to greatly improve the beneficiation index and make full use of the ore resources to meet the smelting requirements.

2. Containing multi-metal iron ore comprehensive utilization must take full account of all useful ingredients for the production of mineral processing tailings and waste utilization should as far as possible.

3. Pay attention to labor protection and environmental sanitation.

4. The method chosen should be simple and reliable, easy to produce and manage; the complex method must have obvious technical and economic effects.

5. The method chosen should be adapted to the local construction conditions. For example, the ore reserves in the mining area are abundant, the concentrating plant has a long service life, and a perfect process should be adopted; dry areas should be avoided in dry areas; areas with poor transportation and poor machining capacity should adopt simple methods; the main raw materials for beneficiation, such as Pharmacy, fuel and medium should be considered locally.

6. Improvements in the production and processing plant's processes must make full use of the original production base, including plant, equipment and production experience.

7. The method chosen should be proven to be effective and reliable through production or testing.

For example, new technologies must be tested and qualified before they can be used; equipment used should be shaped or temporarily finalized.

(2) Ore properties

1. Depleted ore containing massive gangue should be considered to remove gangue by heavy medium dressing, jigging or dry magnetic separation.

2. Mud-containing ore should be considered for removal of slime by washing.

3. Strong magnetic minerals are recovered by weak magnetic separation.

4. Weak magnetic minerals are recovered by re-election, roasting magnetic separation, flotation, strong magnetic separation or electro-election according to their physical or chemical properties and particle size.

5. Phosphorus sulfide minerals and mineral buoyant comparison, conventional flotation recovered.

6. A multi-metal iron ore and a multi-iron mineral iron ore that is difficult to select by a single method, a combined process of several methods is commonly used.

7. Minerals with very fine particle size (below 20 microns) or multi-element minerals should be considered for the selection of useful mineral aggregates or useful components of the load, and if necessary, consider the combination method.

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