Advantages of Tilting Rotary Furnace

The energy consumption of smelting waste aluminum using a conventional reverberatory furnace is about 1000kw/t, equivalent to 100Nm ³/ Natural gas or 100L/t oil. Using a tilting rotary furnace can save 25%. The decrease in energy consumption is mainly due to the significant improvement of heat transfer in the rotary furnace and the dual channel arrangement of the burners, resulting in a large amount of waste heat recovery in the flue gas. The tilting rotary furnace adopts proportional integral differential control mode (IP) D to control the amount of fuel and combustion air. At the same time, this control is continuous and can automatically adjust the temperature according to the charging amount, making the smelting process in an optimized state. When smelting in a reverberatory furnace, the temperature of the furnace top or upper furnace wall is adjusted to 1100 ℃, while the setting temperature of a tilting rotary furnace is 750 ℃. 25% energy savings come from the improvement of temperature difference and thermal efficiency. The productivity of the tilting rotary furnace is improved by the use of fully automated charging machines, automated slag tanks (boxes), and automated slag removal, which means only simple operations are carried out during the smelting process; The number of operators can be reduced by at least two. One person can operate two furnaces with high thermal efficiency and fully automated control of the smelting process to achieve optimal melting speed. The melting cycle of the tilting rotary furnace can be reduced to less than 4 hours, which means that depending on the furnace capacity, each furnace can melt 6 to 8 furnaces per day, which is equivalent to a 15t furnace melting 90 tons of recycled aluminum every 24 hours, and a 5t furnace can melt about 40 tons. Compared to a reverberatory furnace, a tilting rotary furnace has a much wider range of waste capacity, and can effectively melt from low-level slag, chips, and cans to process waste. Therefore, recycled aluminum enterprises can use low-level waste to smelt higher grade or even recycled aluminum, achieving good economic benefits. Low quality waste materials such as chips and slag cannot be melted using a reverberatory furnace. From the above introduction, it can be seen that the main advantages of tilting rotary furnaces are reduced burning loss and increased productivity, which is due to the comprehensive automation control of melting temperature, time, and combustion parameters.

2023/09/18

VC7931 Series Regulator Type Fan Coil Electric Valve Delisting Notices Of Some Products

In order to better lifecycle management of regulator type fan coil electric valve product, delisting plan of VC7931 series nine models regulator type fan coil electric valve.​

2023/08/18

What are the cathode and anode materials for electrolytic lead, and what are the specific reactions?

The anode is made of coarse or semi refined lead, the cathode is made of pure lead, and the electrolyte is composed of silicofluoric acid and lead silicofluoric acid. Anode: Lead is oxidized into lead ions and enters the solution: Pb-2e=Pb2+; Cathode: Lead ions in the solution are reduced to metal lead and precipitated: Pb2++2e=Pb. During the electrolysis process, impurities such as iron, zinc, tin, nickel, diamond, and other metals with a lower standard electrode potential than lead dissolve into the solution together; Metals with standard electrode potentials corrected for lead, such as antimony, arsenic, pound, copper, tin, gold, and silver, do not dissolve and form anode slime, which adheres to the anode surface. Electrolysis is the process of causing oxidation-reduction reactions on the cathode and anode by passing current through an electrolyte solution or molten electrolyte (also known as electrolyte). Electrochemical cells can undergo electrolysis under an applied DC voltage. The process of chemical changes caused by the passage of an electric current through a substance.

2023/09/13

What is ingot mold

An ingot mold is a container or mold used in the casting process to shape and solidify molten metal into ingots. It is typically made of durable materials such as cast iron, steel, or graphite, and is designed to withstand the high temperatures and pressures involved in the casting process.

2023/09/12

Working Principle of Eddy Current Sorter

Eddy current sorting is a sorting technique that utilizes different conductivity of materials. Its sorting principle is based on two important physical phenomena: an alternating magnetic field that changes over time is always accompanied by an alternating electric field (electromagnetic induction law); A current carrying conductor generates a magnetic field (Biot Savart's law).

2023/09/07

Smelting and classification of lead

01. Lead smelting The main raw materials for lead smelting are lead sulfide concentrate and a small amount of block ore. There are two methods for smelting lead: pyrometallurgy and wet metallurgy. Currently, pyrometallurgy is the main method in the world, and wet metallurgy of lead is still in the experimental research stage. The pyrometallurgical lead smelting process basically adopts the sintering roasting blast furnace smelting process, accounting for 85-90% of the total lead production; Next is the reaction melting method, which can be equipped with chamber furnaces, short kilns, electric furnaces, or vortex furnaces; Precipitation melting is rarely used. The refining of lead mainly adopts fire refining, followed by electrolytic refining, but due to customary reasons, electrolytic refining is not widely used in China. For difficult to separate sulfide lead zinc mixed concentrates, the closed blast furnace smelting method that simultaneously produces lead and zinc is generally used for processing. For the extremely difficult to separate mixed ore of lead and zinc oxide, a unique treatment method has been developed in China through long-term research, which involves using the raw ore or its enriched products of the mixed ore of lead and zinc oxide, sintering or pelletizing them, and melting them in a blast furnace to obtain coarse lead and molten slag containing lead and zinc. The slag is further fumigated in a fuming furnace to obtain zinc oxide products, and electrolytic zinc is obtained through wet zinc smelting. In addition, zinc oxide products can also be directly fumigated using a rotary kiln.

2023/09/04

The Use of Lead and Zinc

Lead and zinc are widely used in fields such as electrical industry, mechanical industry, military industry, metallurgical industry, chemical industry, light industry, and pharmaceutical industry. In addition, lead metal has many uses in sectors such as the nuclear industry and petroleum industry. More than 80% of the world's lead is used to produce lead-acid batteries.

2023/09/01

Battery dismantling machines

Battery dismantling machines Battery dismantling machines (battery dismantling machines, battery dismantling machines) easily disassemble waste batteries. If electric vehicle batteries and car batteries are directly disposed of, they pose a significant risk and require centralized recycling for harmless treatment. Therefore, we will use our company's waste battery dismantling machine. The battery car battery dismantling machine equipment uses manual feeding to push waste batteries into the body. The propulsion system pushes the batteries into the position to be cut, and the crank drives the cutting blade to accurately cut off the waste battery cover. The cutting blade can be adjusted, and the propulsion system pushes the next battery forward again.

2023/08/31

How many models of aluminum ingots are there

According to the national standard, aluminum ingots can be divided into 8 models according to their composition, AI99.90 85 70 60 50 00 7E. The general market demand is for standard aluminum AI99.70, with high-end requirements of 85, special requirements of 99.90, and even a few higher requirements.

2023/08/10

The relationship and differences between cathode copper, anode copper, and 1 # electrolytic copper

Electrolytic purification of copper: Coarse copper (containing 99% copper) is pre made into thick plates as the anode, pure copper is made into thin plates as the cathode, and a mixture of sulfuric acid (H2SO4) and copper sulfate (CuSO4) is used as the electrolyte. After being electrified, copper dissolves from the anode into copper ions (Cu) and moves towards the cathode, After reaching the cathode, electrons are obtained and pure copper (also known as electrolytic copper) is precipitated at the cathode. Impurities such as iron and zinc, which are more active than copper, dissolve together with copper to form ions (Zn and Fe). As these ions are less likely to precipitate compared to copper ions, adjusting the potential difference appropriately during electrolysis can prevent these ions from precipitation at the anode. Impurities such as gold and silver, which are less active than copper, deposit at the bottom of the electrolytic cell The copper plate produced in this way is called "electrolytic copper" and has extremely high quality, which can be used to make electrical products. The sediment at the bottom of the electrolytic cell is called "anode mud", which is rich in gold and silver and is very valuable. It has extremely high economic value when taken out and processed Electrolytic copper=cathode copper

2023/08/16