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The preparation of pharmaceutical preparation chemicals is an important part of the production of the ore dressing plant. At the same time as the design of the main plant, the location and height difference of the preparation facilities must be considered. When the dosage and variety of large flotation plants are large, the preparation room should be set separately, and the prepared medicaments should be stored in the preparation room. The design should pay attention to the location, concentration, quantity and preparation method of the preparation facility. The location of the A preparation facility should be higher than the grinding and floating span according to the topographical features, so as to facilitate the full self-flow of the medicament. If the terrain is limited, the distance and height difference should be minimized, and the operation should be created as convenient as possible. The concentration prepared by B is convenient for administration and measurement as quasi-bei II, and the low concentration can be used when the dose is small, and the concentration can be appropriately increased, generally between 5 and 20%. Individual highly toxic drugs can be formulated to a concentration of about 1%. The amount of C preparation is determined by the daily amount and the required concentration. Generally, it is dissolved once per shift, and the large amount of the drug is dissolved twice per shift. Only when the dosage is particularly large, three shifts are considered. In order to ensure the quantity and quality of the preparation, equipment and facilities for measuring and quality inspection of scales, flow meters, instruments and instruments should be installed in the preparation room. D Preparation method of commonly used medicaments Water glass solid water glass is generally dissolved by stirring in a stirred tank. When the amount is large, an autoclave method can also be used to dissolve in steam. The liquid water glass is stirred and stirred by a stirred tank to add a water to dissolve the dilution method. When the amount of sodium sulfide is not large, it can be treated by a manual crushing and stirring tank dissolution method, or an alkali-resistant pump can be used for circulation. When the dosage is 100 kg/shift, it is preferred to use a warming dissolution method, a hot water nozzle or steam is disposed in the dissolution tank, and a closed circuit circulation system is formed by the alkali resistant pump. Soluble agents such as xanthate, sodium carbonate, zinc sulfate, copper sulfate, cyanide, etc., are ways to deal with the cold water and stirred to dissolve. When the amount of oxidized paraffin soap is large, it is often treated with a barrel heating method. After all the dissolution, the packaging barrel is taken out, the dissolved solution is sent to the stirring tank, and the concentration is adjusted and sent to the drug delivery room. Agents with a high freezing point should generally be dissolved at high temperatures. For example, oleic acid, fatty acid agents, etc., since these agents must be used at high temperatures, it is necessary to provide heating and heat preservation measures in the drug feeder, the conveying pipe, and the stirring tank. Lime for powdered dry lime. When the dosage is small, the lime can be directly fed into the ore feeder to the ore conveyor by means of a disc, a belt feeder and the like, and then transferred to the mill. For the concentrating plant with large dosage and many systems, it is advisable to use wet method. For this purpose, an independent lime milk preparation system should be set up, which is prepared by grinding and grading equipment . Some small and medium sized concentrators can also be prepared using lime digester tanks.
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