Inorganic & Metal Salts Filtration Solutions
Filter press cloth that lasts in hot acid, caustic and brine.
Hot, Aggressive Liquors,
Abrasive Crystals.
Metal salts and inorganic chemicals are made in hot, aggressive liquors (sulphuric and hydrochloric acid, caustic, saturated brine) loaded with abrasive crystals. DFR Technical Textiles supplies filter press cloths in PP, polyester and polyamide that keep their dimensions and pore size through thermal cycling, wear slowly under crystal abrasion and release a dry cake.
Stable in Hot Acid & Caustic
Resists Crystal Abrasion
Non-Blinding on Brine Sludge
Drier Cake, Clearer Liquor
Three Problems
We Are Asked to Fix.
Hot acidic or alkaline liquors
How our cloth helps
PP for acid and caustic below 90 °C, polyester and PA for hotter duties. Every cloth is heat-set, so it keeps its dimensions and pore size through thermal cycling.
Crystals wearing the cloth
How our cloth helps
Heavy multifilament and twill constructions put more yarn on the face, so abrasive metal-salt crystals wear the cloth slowly and evenly instead of cutting it.
Brine sludge and gypsum blinding
How our cloth helps
Monofilament and calendered faces resist blinding by fine sludge and gypsum, and release a drier cake at the end of each cycle.
Where DFR
Adds Value.
Our cloths work at the clarifying and sludge presses that protect the crystalliser and the product.
Dissolution
Ore, scrap or salt is dissolved in hot acid or caustic.
Clarifying Press
DFR cloths remove insolubles before the liquor reaches the crystalliser.
Crystallisation
Clear liquor is crystallised by cooling or evaporation.
Separation
Crystals are separated from the mother liquor.
Sludge Press
DFR cloths dewater brine and neutralisation sludge.
Three Filtration Duties
Clarifying Press Cloths
Sulphate, chloride & nitrate liquors
- Chemical-resistant PP and PET
- Stable pore size above 90 °C in PET and PA
- Bright, insoluble-free liquor
- Heavy twill face resists abrasion
- Sealed edges, gasketed option
Brine & Gypsum Sludge Cloths
Chlor-alkali, neutralisation
- Non-blinding monofilament face
- Drier sludge cake per cycle
- Resists caustic and hypochlorite
- Long runs between wash-downs
- Lower disposal weight
Crystal Recovery Cloths
Metal salt isolation
- Retains the fine crystal fraction
- Clean release of crystalline cake
- Efficient wash to low mother liquor
- Even wear under sharp crystals
- Longer cloth life
Chemical-Resistant Constructions,
Cut to Your Plate Drawing.
Chemical-Resistant PP Press Cloths
For sulphate, chloride and nitrate liquors; mono- or multifilament; sealed edges.
Filter press clothsPolyester & PA Cloths for Hot Duties
Dimensionally stable above 90 °C, heat-set for long life.
Filtration fabricsBrine Sludge & Gypsum Cloths
Non-blinding faces for chlor-alkali brine purification and neutralisation sludge.
Effluent treatmentGasketed (CGR) Cloths
Rubber-edged for leak-free operation on corrosive liquors.
Filter press clothsAvailable Fabric Configurations
Polypropylene (PP)
Acids and caustic below 90 °C
Polyester (PET)
Hot acidic duties and dimensional stability
Polyamide (PA)
Hot alkaline liquors and high abrasion
Monofilament
Non-blinding for brine and gypsum sludge
Heavy Multifilament
Abrasion resistance under sharp crystals
Why Choose DFR Filter Press Cloths
for Inorganic & Metal-Salt Plants?
Hot Acid & Caustic
PP, PET and PA graded to temperature and chemistry.
Abrasion Resistance
Heavy constructions wear slowly under crystal attack.
Non-Blinding
Monofilament faces shed brine sludge and gypsum.
Drier Cake
Permeability matched to your slurry for lower moisture.
Woven & Stitched In-House
Yarn to finished cloth in one facility in Gujarat, supplying inorganic chemical and metal-salt plants.
Cut to Your Drawing
Recessed, membrane, plate & frame or CGR. Standard sizes from stock.
Hot acid. Sharp crystals.
Longer cloth life.
Send us your press make and plate size, the liquor and its temperature, and whether the duty is clarification, crystal recovery or sludge. We will propose a construction for it.