Determine beneficiation plant scale is based on national, local, sectoral and construction business needs, the feasibility study, final approval by the higher authorities to determine the feasibility study report. When determining the scale of the concentrator construction, the following factors should be fully considered:
(1) In geological resources and mining conditions possible, the concentrator should be considered together with the scale metallurgical plant and mine construction scale.
(2) Considering the technical possibility of the treated ore, economic rationality, combined with the construction conditions (site, transportation, water supply, power supply, capital, etc.), and the mining of the technical and economic comparison of different scale schemes, determine the reasonable The scale of construction.
(3) Large-scale concentrating plants (especially mines for underground mining) should generally consider construction in phases, complete and start production in series, form production capacity in a short period of time, and exert investment effects as soon as possible. Medium and small-scale concentrating plants can be built at one time.
(4) When determining the construction scale of the ore dressing plant, the service life must be reasonably determined under the conditions of the mining mining technical conditions. The service life of the concentrator shall be calculated according to the mine's reliable deposit industrial reserves (B+C grade) and the mine prospective reserves (Grade D) as a reference.
The size of the ore dressing plant is generally expressed by the amount of raw ore processed, because although the content of useful components in the ore and the amount of concentrate obtained are different, the ore dressing plant has roughly the same major production facilities, auxiliary facilities and management institutions as long as the treated ore is the same. . The division of the size of the ore dressing and its service life are shown in the table below.
 Separation plant size division and service life | |||||||
Scale type | Ferrous metal ore dressing plant | Non-ferrous metal ore dressing plant | Chemical mine concentrator | Length of service | |||
Mt/a | Equivalent to kt/d | Mt/a | Equivalent to kt/d | Mt/a | Equivalent to kt/d | a | |
Large | > 2 | > 6 | > 3 | > 1 | > 1 | > 3 | ≥ 20 |
Medium | 0.6~2 | 1.8~6 | 0.6~3 | 0.2~1 | 0.2 (0.3 phosphate ore) - 1 | 0.6 (phosphorus ore 0.9 ) ~3 | ≥ 15 |
Small | < 0.6 | < 1.8 | < 0.6 | < 0.2 | 0.2 (phosphorus ore 0.3 ) | < 0.6 (phosphorus ore 0.9 ) | ≥ 10 |
When the size of the concentrator is greater than or close to 10Mt/a, the service life can be appropriately increased; when the country urgently needs metals or minerals, deposits that need to be accelerated, simple small concentrators, small bonanzas, and rich mining conditions with better mining conditions and Mines with a large reserve of prospective deposits can be shortened by the approval of the higher authorities.
The division of large, medium and small concentrators is to follow the determination of production methods, technical equipment levels, building structure standards and infrastructure investment.
The Gas Valve high pressure valves provide complete shutoff in the event that the flame heating the Thermocouple is extinguished.
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It intended for use in a dual burner system that requires a continuously burning standing pilot at each burner.
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