Advantages of Induction Melting Furnace in Mining Industry to Melt Silver Precipitate

What are precipitation processes and precipitates?

Precipitation is a chemical extraction that is related to making a dissolving element into an insoluble element.  When the soluble element turns into an insoluble solid, it is called a precipitate. Precipitation is the method of transforming soluble elements into solid and insoluble elements. The precipitation method is a common method for the extraction of dissolved metals from wastewater and other harmful metals.

Common techniques to extract defects in the precipitation process:

Since the defects or impurities highly influence the precipitation process, those defects should be extracted from the precipitation process. The common techniques for the extraction of defects from the precipitates are:

●The volume of the particles should be regulated so that defects cannot participate in the precipitation.

●The precipitate needs to be filtered to avoid defects.

●The precipitates should be washed to remove contaminants.

●The precipitates need to be dried to remove defects. This technique is perfect to melt silver precipitates by induction melting furnace.

What are silver precipitates?

Silver Precipitate (Concentrate) placed Crucible for Smelting
Silver Precipitate (Concentrate) placed Crucible for Smelting

Silver precipitates are known as deposits of silver. These are made once a soluble silver compound creates reactions with another element. The process of precipitation is the process when the solid compound makes it separated from the solution as a precipitate. Silver Chloride and Silver Bromide are two silver precipitates. Silver is usually found in slags or wastes which carry lead, gold, copper, and other metals. Once the main metal is extracted, slag frequently carries a little quantity of silver.

The following rules are applied for refining silver:

  • Humidity issue of precipitate should be around 50%
  • Silver matter needs to be 2,60,000gm/filter cycle
  • Flux accumulation 2.1 x precipitate defects

Why induction furnace is used to melt silver precipitates?

The fundamental principle of the induction melting process is that the high voltage from the primary coil generates a high current in the metal or secondary coil. Induction heating is also known as the process of transferring heat energy. It generates heat through the process of electromagnetic induction. An induction furnace heating process is operated by electricity that is used for melting silver precipitates. It is excellent for melting silver precipitates. It is widely used in the industry for melting silver precipitates.

How induction furnace is used to melt silver precipitates?

Silver precipitates are generally wet and need to be dried before putting those into the induction furnace. Energy gets wasted due to the extra humidity in the precipitates and those precipitates create little explosions in the furnace. A rotary dryer is used to make the precipitates dry. After making dried, precipitates are mixed with fluxes and delivered into the induction furnace for improvement.

The following operational methods should be complied with for the better accomplishment of the equipment and safety during using the precipitate dryer and the induction furnace:

  • The temperature of the dryer needs to be customized with the proper temperature regulator and wet precipitate should be delivered into the dryer.
  • Once wet precipitates are delivered into the dryer, enough time should be given for the dryer to dry the precipitates. Proper fluxes should be provided in the dryer. Enough time should be given for the dryer to mix up the fluxes with the dry precipitate.
  • Once the temperature of the induction furnace is reached 2000 degrees Fahrenheit, it can be charged with the dry precipitate and flux mixture.
  • Once precipitate and flux are melted in the furnace, the slag should be poured out of the furnace into the slag cart. New precipitate and flux can be added into the furnace and then the slag, after turning into fluid, can be extracted again. The process should be continued before the precipitate dryer becomes vacant of its contents.

Advantages of Induction Melting Furnace to Melt Silver Precipitates:

The recovery of precious silver is related to the extraction of precipitates from silver. The induction melting process is well-known as one of the most effective techniques for recovering and refining silver perfectly. Some important reasons have been mentioned below why the induction melting process is so important to recover silver from its precipitates:

  • Better efficiency:

Conventional melting systems used to take much time to melt silver precipitates while induction melting furnaces take less time to do the same thing because induction melting furnaces can heat up very fast to high temperatures. The effectiveness of induction melting is involved with its power consumption. Power consumption makes the heating process quick. The melting time of the silver precipitates can be reduced by the quick heating process.

  • Lower operational costs:

Induction furnaces absorb less energy than other furnaces, such as oil-fired furnaces, while upholding high temperatures. The efficiency of energy is related to the operating cost of the induction melting process. The production costs can be saved due to the lower power consumption of induction furnace systems.

  • Better Heating Capacity:

Induction heating furnaces can reach very high temperatures in a short time while conventional heating furnaces take much time and face much difficulty to reach into that high temperature. Because of very high temperatures, induction melting furnaces are widely used for melting silver precipitates. Since induction furnaces have very high heating up capacity, these are considered much better furnaces than other conventional furnaces.

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