Brightstar - Aluminum Extrusion Dies Cleaning Waste Alkali Liquid Treatment System

The equipment system mainly includes the following three parts:

Multifunctional extrusion dies cleaning equipment, waste alkali mist purification equipment and waste alkali liquid recovery and reuse equipment.

The waste liquid generated after cleaning by the multifunctional mold cleaning equipment is uniformly collected in the waste alkali liquid collection pool, and the waste alkali liquid is pumped to the waste alkali liquid recover}` and reuse equipment through a pump.

The waste alkaline gas generated during mold etching and cleaning is pumped to the spray tower through a negative pressure fan, subjected to deep desorption and purification treatment, so that it can meet the emission standards after treatment.
The waste alkali recovery and treatment equipment adopts the hydrolysis crystallization method (also known as the Bayer process).

It hydrolyzes the sodium aluminate compound in the waste alkali liquid of the aluminum extrusion dies corrosive cleaning into particulate aluminum hydroxide and sodium hydroxide solution, realizing the secondary recycling of the liquid sodium hydroxide solution, reducing the company`s use of caustic soda, and by-product aluminum hydroxide is collected and sold to create additional income for the company.

The waste alkali liquid recovery system is automatically controlled by PLC program.

There is no need for worker monitoring throughout the process.

The recover}` reaction does not require additional heating and cooling.

The system equipment has ultra-low energy consumption.

The complete system treatment produces no waste alkali mist, achieving zero discharge of waste alkali liquid.

Multifunctional extrusion dies cleaning equipment

The multifunctional intelligent extrusion dies cleaning tank is mainly used for mold etching and cleaning.

The extrusion dies cleaning tank can be selected as a single tank or a multi-tank type according to the number and size of the customer`s extrusion dies.

The extrusion dies cleaning tank contains a cleaning tank with a built-in temperature probe, electromagnetic heater and exhaust gas collection port.

The outer wall of the tank is wrapped with high-efficiency thermal insulation cotton and wrapped with high-quality SUS304 board for corrosion protection.

Waste alkali mist purification treatment equipment
The main function of the waste alkali mist purification equipment is to absorb and purify the waste alkali gas generated during extrusion dies cleaning. The treatment equipment is equipped with a collection duct, a high-efficiency desorption spray tower and a negative-pressure fan. After being treated by the equipment, it can be directly discharged to meet the standards.

Waste alkali recycling and reuse equipment

Waste alkali recovery and reuse equipment is used for alkali recovery.

It mainly includes waste liquid collection unit, crystallization hydrolysis unit, recovery liquid collection unit and by-product collection unit.

• Equipment space: Li9000mm*W8ooomm*H6500mm
• Inoculating seed storage tank (outdoor): Diameter 3000mm, height 6000mm
• Spray tower (outdoor): Diameter 1500mm, height 3000mm
• 2 extrusion dies cleaning tanks: Li500mm*Wi300mm*Hi200mm
• 1 washing tank: Li500mm*Wi300mm*i200mm
• 1 waste alkali tank: Li6oomm*Wi500mm*H2200mm
• 1 alkali tank: Li6oomm*Wi500mm*H2200mm
• Reaction tank: Li6oomm*Wi500mn*H2200mm
• Decomposition equipment: Li8oomm*W2ioomm*H4000mm

Process for processing extrusion dies cleaning caustic soda reuse: extrusion dies cleaning caustic soda, heating, cleaning, spraying are all available, the operation is very convenient, and it is highly efficient and energy-saving.

The caustic soda can be saved by 90%, the tap water consumption can be saved by 99%, and the cost of aluminum removal agent is only equivalent to 10-1596 of caustic soda.

• Save more than 90% of the use of caustic soda and 9996 of the use of tap water.
• Avoid risks and reduce expenses. Traditional de-molding wastewater is absolutely hazardous waste, which requires qualified enterprises to recycle and treat. The current treatment cost is more than 2,000/ton.
• Zero discharge throughout the treatment process.

The solid precipitate produced at the end can be sold normally to recover part of the cost.

It fundamentally solves the problems of large caustic soda consumption, small amount of aluminum recovery, harsh working environment and unsafe conditions in the alkali cleaning process of aluminum extrusion dies.

At the same time, the alkali cleaning waste liquid recovery system can effectively recover the excess alkali solution in the waste liquid for extrusion dies cleaning and separate the aluminum ions through chemical methods, thereby achieving zero wastewater discharge in the extrusion die alkali cleaning process, recovering aluminum ions and improving economic benefits.

The fully automatic aluminum extrusion die alkali cleaning and waste liquid comprehensive recycling system is system equipment that uses advanced sensors, process automatic control, breakthrough process operation methods and other new technologies to achieve efficient, energy-saving, pollution-free and safe mold alkali washing cleaning treatment.