Deliming Bath for Leather Processing

Product Specifications

Technical details and manufacturing context for Deliming Bath

Definition

The deliming bath is a critical component within the Beamhouse Module of leather manufacturing facilities. It serves as the processing tank where hides undergo deliming treatment after the liming stage. This bath facilitates the neutralization of alkaline residues, removal of calcium hydroxide, and pH adjustment to prepare the hides for subsequent bating and pickling processes. The bath ensures proper chemical penetration and uniform treatment across the hide surface.

Constructed from materials such as stainless steel, chemical-resistant polymers, or reinforced concrete, the deliming bath is designed to withstand the corrosive chemicals used in the deliming process. Typical working volumes range from 1000 to 5000 liters, with operating temperatures between 20 and 40°C. The pH is reduced from approximately 12 to a range of 7.5–9.5. Agitation speeds of 10–30 rpm ensure uniform chemical distribution and heat transfer. The bath may be equipped with a motor (2.2–7.5 kW) and electrical supply of 380–415 V AC (three-phase, 50/60 Hz). Ingress protection ratings of IP54–IP65 are typical. Operating pressure is atmospheric or slight positive (0.1–0.3 MPa). The weight ranges from 500 to 2000 kg, and the footprint is approximately 2–6 m². Temperature control accuracy is ±1°C.

Material grade for stainless steel components is often 316L per ASTM A240. Motor power and electrical supply references are per IEC 60034 and IEC 60038, respectively. Ingress protection is per IEC 60529. These standards serve as procurement references; actual compliance must be verified with the manufacturer.

When selecting a deliming bath, consider the required working volume, available floor space, and utility connections. Verify that the bath's agitation system and temperature control meet the specific chemical and hide-load requirements. Confirm the material compatibility with the deliming agents used. Maintenance signals include inconsistent pH adjustment, uneven chemical penetration, or visible corrosion. Failure boundaries include leaks, motor failure, or loss of temperature control. Always verify model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The deliming bath operates by immersing hides in a chemical solution containing deliming agents (typically ammonium salts or weak acids). The solution circulates through the bath, facilitating chemical reactions that neutralize alkaline residues from liming, dissolve calcium compounds, and lower the pH to the optimal range for subsequent processing. Temperature, chemical concentration, and immersion time are carefully controlled to achieve complete deliming without damaging the hide structure.

Common Materials

Stainless steel, Chemical-resistant polymers, Reinforced concrete

Technical Parameters

Parameter	Typical range	Notes & selection driver
Working Volume	1000–5000 L	Typical capacity range for deliming baths
Operating Temperature	20–40 °C	Optimal enzyme activity and chemical reaction rate
pH Range	7.5–9.5 pH	After deliming, pH should be reduced from ~12 to this range
Agitation Speed	10–30 rpm	Ensures uniform chemical distribution and heat transfer
Material Grade	316L SS	Corrosion-resistant stainless steel for chemical exposureASTM A240
Motor Power	2.2–7.5 kW	Depends on volume and agitation requirementsIEC 60034
Electrical Supply	380–415 V AC	Three-phase, 50/60 HzIEC 60038
Ingress Protection	IP54–IP65	Protection against dust and water splashesIEC 60529
Operating Pressure	0.1–0.3 MPa	Atmospheric or slight positive pressure for venting
Weight	500–2000 kg	Depends on capacity and material thickness
Footprint	2–6 m²	Approximate floor space required
Temperature Control Accuracy	±1 °C	Maintains consistent temperature for chemical reactions

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Bath Tank
Primary containment vessel for deliming solution and hides

Material: Stainless steel
Agitation System
Circulates chemical solution to ensure uniform treatment

Material: Stainless steel/PVC
Temperature Control Unit
Maintains optimal process temperature

Material: Stainless steel/Copper
pH Monitoring Probe
Continuously measures and controls solution pH

Material: Glass/Platinum
Drain Valve
Controls solution drainage and replacement

Material: PVC/Stainless steel

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Beamhouse Module

View system integration details

Manufacturers of Deliming Bath

Manufacturer profiles associated with Deliming Bath.

Sourcing Deliming Bath from China?

Tell us your specification and target quantity — we will match it against manufacturer records and come back with the factories that fit.

Request manufacturers We manufacture this

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Frequently Asked Questions

What is the typical working volume of a deliming bath?

Typical working volumes range from 1000 to 5000 liters, but the exact capacity depends on the specific model and application. Always confirm with the manufacturer.

What materials are commonly used for deliming baths?

Common materials include stainless steel (often grade 316L per ASTM A240), chemical-resistant polymers, and reinforced concrete. The choice depends on the chemical environment and structural requirements.

What pH range is targeted after deliming?

After deliming, the pH is typically reduced from around 12 to a range of 7.5–9.5. This prepares the hides for subsequent bating and pickling processes.

What standards are referenced for deliming bath components?

Standards such as ASTM A240 for material grade, IEC 60034 for motor power, IEC 60038 for electrical supply, IEC 60529 for ingress protection for operating pressure are often referenced. These are procurement references; actual compliance must be verified with the manufacturer.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Buyer enquiry

Request manufacturing insight for Deliming Bath

Ask for use case, specification boundaries, supplier type, and RFQ preparation information for this product.

Where it goes: Straight to the CNFX editorial desk, and to the manufacturer if this product is linked to a claimed profile. Nothing is broadcast to a supplier list.
Your details stay here: We do not sell or rent enquiry data, and we do not add you to a mailing list. Used only to answer this request.
No commission, no middleman: CNFX is a directory. We take no cut of any order and never negotiate on a supplier's behalf.
What we don't claim: A listing is not an endorsement. Qualify every supplier and verify every figure yourself before ordering.

pressure:	Atmospheric to 1.5 bar (21.8 psi)
flow rate:	0.5-5 m³/h (2.2-22 gpm)
temperature:	20-50°C (68-122°F)
slurry concentration:	5-15% solids by weight

Deliming Bath

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards