Applications
Concrete & building materials
Ready-mixed concrete
Precast concrete
Special & high-performance concrete
Hydro dam concrete
Concrete paving blocks
Sand-lime blocks
Dry building materials
Sand & gravel
Road construction
Mining & minerals
Disposal
Mixers
Mixers
Twin-shaft batch mixer (DKX)
Planetary mixer (BPX)
Dry powder batch mixer (DMX)
Twin-shaft continuous mixer (LFK)
Single-shaft continuous mixer (MFKG)
Combimix process (DKXC)
Horizontal mixer (AVA HTC/HTK)
Laboratory mixer
Plant concepts
Used machines
Twin-Shaft batch mixer (OX)
Crushers
Tests & consulting
After-Sales
Sales
Showroom
Solutions
Processes for metal recovery
Light metal scrap
Automotive shredder residue (ASR)
Waste electrical & electronic equipment (WEEE)
Batteries
Incinerator bottom ash (IBA)
Ferrous & nonferrous slags
Metal recovery from fine fractions
Processes for industrial waste
Machines
Impact crushing
Rotorshredder (RS)
Rotor impact mill (RPMV & RPMX)
Impact crusher (PB) & Impact mill (PM)
Rotor centrifugal crusher (RSMX)
Cutting & tearing shredding
Biomass crushers
Plant control systems
Classifying & sorting
Used machinery
Tests & consulting
After Sales
Sales
Showroom
Chemical- and pharmaceutical production plants produce waste streams containing valuable precious metals. A large proportion of these liquids originate from reactions based on homogeneous precious metal catalysts. After the production process, the precious metals remain diluted in the aqueous- or solvent-based suspensions. Direct disposal of said waste streams, is both ecologically and economically disadvantageous for the producers. Indaver NV has, in collaboration with BHS-Sonthofen, developed an elegant solution to reduce the waste volume, enable reuse of the precious metals and recycle the solvents when possible (3R principle). The precious metals are recovered by collecting and treating the liquids in the Inda-MP plant.
To separate the rare metals that occur in suspension or sediment form in the liquid streams, the liquid solvent streams are processed in an upstream reactor. The BHS pressure plate filter is used for the subsequent recovery of the precious metals. The particular challenge here is the processing of many different types of hazardous and explosive input streams with a wide range of viscosities. The pressure plate filter works discontinuously and is used for cake-forming solid-liquid separation in suspensions with a low solid content and poor filterability. It is a compact, fully automatic unit that allows maximum flexibility.
The entire filtration process takes place under pressure in a closed, gas-tight system. This enables the pressure plate filter to be used even under strict safety or containment requirements. Products can also be processed in an inert atmosphere. The fully encapsulated filter and its components are designed for an operating pressure of 6 bar and comply with European ATEX regulations. Due to the high corrosiveness, all parts in contact with the product are made of super-duplex steel or Hastelloy.
In order to protect the end product from external contamination and at the same time protect the operators from contact, a discharge system specially tailored to the process and the system was designed in collaboration with Indaver. This system is based on an endless liner and a special emptying device.