Analysis of the composition of a vacuum furnace system

Vacuum furnaces generally use rotary vane mechanical pumps, Rolls-Roy pumps or even oil diffusion pumps or ion pumps to form a vacuum system, while SLV furnaces only use water-ring vacuum pumps. The principle is similar to common water pumps. The vacuum degree is about 104Pa, which is much lower than that of high vacuum. furnace. However, the ingenious process of evacuation and the associated simple control device can greatly reduce the oxygen concentration in the furnace.

Precautions for using high-temperature and low-vacuum furnaces In order to ensure the normal operation of the furnace and extend the maintenance cycle as much as possible, special attention should be paid to the following points: (1) The supply of water for cooling water and water ring vacuum pumps must be guaranteed at all times. Recirculating pools save water. At present, the vacuum degree of each plant is still increased by vacuum pumps.

(2) Always check the contact between the furnace cover and the interface of the furnace boss to ensure a high degree of smoothness and smoothness. When the furnace temperature changes, the Roots water ring vacuum unit or the work piece collides with and impacts, so that the quality of the contact surface is reduced, and even when the deflection is deformed, it is necessary to perform maintenance in time.

(3) Each time the furnace is installed, it is necessary to carefully observe the quality condition of the lid seal rubber ring, and rigidly provide regular (about 3 months) with a new apron with good quality.

(4) When the furnace is repaired, replace the sealing rubber ring of the double door lifting mechanism, terminal and thermocouple insertion hole with vacuum grease, check whether the cooling water jacket is working properly, water ring vacuum pump and its Electric contact pressure gauges, changeover switches, etc. are also routinely inspected and maintained. Low vacuum heat treatment furnace has good sealing performance and uses vacuum circulation and other measures to solve this problem.

Carbon Desorption1

Compared with similar products at home and abroad, this series of equipment has significant technical advantages, which are mainly reflected in:

1. High gold desorption rate: the carbon-poor gold grade after desorption is less than or equal to 50g/t (the same industry products are generally less than or equal to 100g/t).

2. High primary electrolysis rate: the average electrolysis rate of desorption solution is ≥90%. (The products in the same industry are generally around 70%).

3. Accurate gold balance: the actual amount of gold obtained after desorption and electrolysis is consistent with the theoretical gold content in the gold-loaded carbon. (Products in the same industry generally have the phenomenon of "floating gold or accumulative funds", which causes the loss of gold in the processing process and makes the amount of gold unbalanced)

4. Efficient and easy to operate: The whole set of equipment adopts integrated design, signal acquisition, operation adjustment control and safety protection are automated to ensure high efficiency, easy operation, safety and reliability during the entire operation period.

5. Low operating cost: The equipment is made of real materials of special materials (mainly including high-quality insulation materials, all-tetrafluoroethylene insulation materials, fully imported aerospace-grade circulating pumps, high-resistance electric shock heating pipes, etc.). The power-consuming equipment adopts frequency conversion design to ensure the low cost of operation and maintenance while ensuring the desorption electrolysis index.

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Changchun Gold Research Institute Co.LTD , https://www.changchunmachine.com