Mixing & Diluting
We design and produce dilution- and mixing-systems for different capacities and acid densities. We build systems suitable both for batch and continuous operation. All our systems are compact and fully automatic with the highest level of reliability and safety.
Acid Mixing & Diluting
We offer a wide range of mixing equipment. Our goal is to provide highest quality equipment with outstanding performance and great flexibility that is easy-to-use and provides the highest accuracy in your production.
Batch or Continuous
Regardless if you choose a Batch or Continuous equipment all of our systems are designed to be fully automatic and intentioned to mix the acid density you need in your production 24/7.
The high accuracy (± 0.002 g/cm³) is ensured with a Coriolis mass flow meter.
We at Källström have used this type of meter for both filling and mixing for over 20 years now and the track record is excellent.
A single stand in acid proof steel includes all necessary parts such as valves, pumps, piping, PLC and heat exchanger. The compact design can be shipped as is in a standard ocean container and once in place it is easy to install.
Any density you need
Our mixing equipments are designed to mix concentrated acid to any desired density.
Typical options for the mixing equipments are chillers, storage tanks in HDPE, production of de-ionized water, recycling of waste acid for usage in the mixing process and dosing of additives like Na2SO4 and NaOH.
- Batch or Continuous mixing
- Compact Single unit
- Capacity up to 6 m³/h
- Accuracy down to ±0.002 g/cm³
- Fully automatic operation 24/7
Acid mixing equipment
SB1-B / SB1-K
SB1-B is an acid mixing machine for batch mixing. The machine is designed for diluting battery acid. Concentrated acid (H2SO4) density is diluted with de-ionized water (H2O) to obtain the required densities. The mixing is done continuously or by batch in a 2.5 m³ tank. Reclaim acid can also be used in the process. The density is measured by a Coriolis mass flow meter. The mixing process is fully automatic and controlled by the PLC. The integrated system includes mixing unit with heat exchange.
Källström can supply options like complete de-ionising plant for water, mixing unit for Na2SO4/NaOH, sedimentation/filtering unit for reclaimed acid, and all can be controlled by one PLC.
Our powder mixers are fully automatic mixers intended for mixing powdered additives with liquids to different conductivities and density for automatic distribution to production if needed. For example our Sodium mixer is a fully automatic mixer intended for mixing powdered sodium (Na2SO4) with water to different conductivities and for automatic distribution to production.
The powder mixers cosists of a powder container connected to a dosing tank with an agitator for mixing the solution in the dosing tank. The tank and the container are connected via a worm conveyor and both tank and powder container are equipped with level sensors.
The dosing tank where the water and the sodium is mixed by the agitator, contains a level sensor for indication of low and high level (from a safety point of view there is a redundancy for high level indication).
The water and powder inflow is automatically controlled by sensors; on the Sodium mixer a conductivity meter measures and continuously monitors the sodium solutions salinity.
- Fully automatic
- Level sensors with redundancy
- Continous mixing 24/7
Powder mixing and dosing equipment
PM1 – Sodium mixer
The PM1 Sodium mixer is a fully automatic mixer intended for mixing powdered sodium with water to different conductivities for distributing to production.
The Sodium powder mixer has a powder tank, a worm conveyor and a dosing tank with an agitator for mixing the solution in the dosing tank. The tanks are equipped with level sensors. The dosing tank contains a level sensor for indication of low and high level (from a safety point of view there is a redundancy for high level indication). The water and sodium inflow is automatically controlled by sensors; a conductivity meter continuously measures and monitors the salinity of the sodium solution.
In-line mixing of acid and colloidal silica
With our new design of sealless ceramic syringes combined with a static mixer we offer a fully automatic and accurate in-line mixing of acid and colloidal silica to any required mixing ratio.
The unit is compact and it is easy to increase the capacity by adding one or more syringes.
The stroke of the cylinders is controlled by a servo motor that ensures a smooth and precise movement ensuring the high dosing accuracy of ±1 ml for each media.
Direct filling or in-direct filling
The unit can the fill the mixture/electrolyte directly into batteries, drums or cans or it can supply a filling machine with the mixed product.
The capacity depends on the number of syringes. The more syringes the higher capacity, which means that it can be customized for every specific need. If required the design can make it possible to increase the capacity in the future by adding more syringes.
In order to prolong the gelling time the acid can be chilled before the mixing. The best solution are considered for every case.
- In-line mixing of acid and colloidal silica
- Sealless ceramic syringes for exact dosing
- Static mixer/h
- High accuracy
- Customized capacity
- Cooling of acid
Gel mixing equipment
The unit is designed for in-line mixing of sulphuric acid and Colloidal silica to create a gel electrolyte for battery filling.
The mixing unit consists of a stand in acid proof stainless steel, syringe unit and electrical cabinet.
As standard the syringe unit includes one (1) syringe for silica, four (4) syringes for acid and a static mixer.
Furthermore, two cylinders each controlled by a servo motor, moves the syringe for silica respective the four syringes for acid. The stepper motors provide exact movement of the syringes and thus accurate mixing ratio and accurate volume of mixed electrolyte.
The mixing ratio and electrolyte volume is set on the HMI.
All parts are acid resistant materials: PVC and acid-proof stainless steel.
The syringes for acid are made in Ceramic and the one for silica in PVC.
The unit can supply a filling machine with mixed electrolyte or it can be equipped with a filling nozzle for direct filling of cells. The best solution has to be discussed in every case.
As option a cooling system for the acid can be offered.