Industry-Verified Manufacturing Data (2026)

Deliming Bath

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Deliming Bath used in the Leather and Related Product Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Deliming Bath is characterized by the integration of Bath Tank and Agitation System. In industrial production environments, manufacturers listed on CNFX commonly emphasize Stainless steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A chemical treatment vessel used in leather processing to remove lime and adjust pH after liming operations.

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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.
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
  • Working volume capacity of the bath (L) Customizable
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
Engineering Reasoning
pH 3.5-5.0 at 25-35°C, 0.1-0.3 bar pressure
pH < 2.8 or > 6.2 causes protein denaturation, temperature > 45°C accelerates chemical degradation
Design Rationale: Acid-base equilibrium disruption (H+ ion concentration exceeding 10^-2.8 M or below 10^-6.2 M) leading to collagen hydrolysis
Risk Mitigation (FMEA)
Trigger Sulfuric acid concentration exceeding 15% w/w
Mode: Polypropylene lining delamination and tank wall corrosion
Strategy: Integrated conductivity sensors with automated acid dosing cutoff at 12% concentration
Trigger Mechanical agitator imbalance exceeding 0.05 mm vibration amplitude
Mode: Shaft seal failure causing chemical leakage
Strategy: Dual-axis vibration monitoring with automatic shutdown at 0.04 mm amplitude

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Deliming Bath.

stainless steel deliming bath for leather chemical-resistant deliming bath pH control industrial leather deliming bath with agitation system temperature controlled deliming bath for tanneries reinforced concrete deliming bath for leather processi

Applied To / Applications

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

Beamhouse Module
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Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
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
Media Compatibility
✓ Ammonium salts solution ✓ Weak organic acids (e.g., formic, acetic) ✓ pH-adjusting salts (e.g., sodium bisulfate)
Unsuitable: Strong oxidizing agents (e.g., concentrated nitric acid, hydrogen peroxide)
Sizing Data Required
  • Daily leather processing capacity (kg/day)
  • Required residence time for deliming (minutes)
  • Available footprint/installation space (m²)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Chemical corrosion of tank lining
Cause: Prolonged exposure to acidic deliming solutions (e.g., hydrochloric or sulfuric acid) degrading protective linings (rubber, fiberglass, or epoxy), leading to leaks and structural weakness.
Pump or agitator mechanical failure
Cause: Cavitation or abrasive wear from suspended solids in the bath, combined with improper maintenance intervals, causing impeller damage, seal leaks, or motor burnout.
Maintenance Indicators
  • Visible leaks or weeping at tank seams, valves, or pump seals, indicating lining degradation or seal failure.
  • Unusual noises (grinding, knocking) from agitators or pumps, suggesting cavitation, bearing wear, or impeller imbalance.
Engineering Tips
  • Implement routine lining inspections and non-destructive testing (e.g., ultrasonic thickness gauging) to monitor corrosion rates and schedule proactive repairs.
  • Optimize bath filtration and solids removal systems to reduce abrasive particles, and ensure proper pump selection (e.g., corrosion-resistant materials, adequate NPSH) to prevent cavitation.

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 - Quality management systems ASTM A967 - Standard Specification for Chemical Passivation Treatments for Stainless Steel Parts CE Marking - Directive 2014/68/EU for Pressure Equipment
Manufacturing Precision
  • Bath wall thickness: +/-0.5 mm
  • Internal surface roughness: Ra ≤ 1.6 μm
Quality Inspection
  • Leak test (hydrostatic/pneumatic)
  • Material composition verification via X-ray fluorescence (XRF) analysis

Factories Producing Deliming Bath

Verified manufacturers with capability to produce this product in China

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✓ 92% Supplier Capability Match Found

P Procurement Specialist from United States Feb 08, 2026
★★★★★
"Reliable performance in harsh Leather and Related Product Manufacturing environments. No issues with the Deliming Bath so far."
Technical Specifications Verified
T Technical Director from United Arab Emirates Feb 05, 2026
★★★★★
"Testing the Deliming Bath now; the technical reliability results are within 1% of the laboratory datasheet."
Technical Specifications Verified
P Project Engineer from Australia Feb 02, 2026
★★★★★
"Impressive build quality. Especially the technical reliability is very stable during long-term operation."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

14 sourcing managers are analyzing this specification now. Last inquiry for Deliming Bath from USA (44m ago).

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Frequently Asked Questions

What is the primary function of a deliming bath in leather manufacturing?

A deliming bath neutralizes and removes residual lime from hides after the liming process, adjusting pH levels to prepare the leather for subsequent tanning operations.

Why are materials like stainless steel and chemical-resistant polymers used in deliming baths?

Stainless steel offers corrosion resistance against acidic deliming chemicals, while chemical-resistant polymers prevent degradation from harsh solutions, ensuring durability and safety in industrial leather processing.

How does the agitation system in a deliming bath improve leather processing efficiency?

The agitation system ensures uniform chemical distribution and consistent contact with hides, enhancing lime removal and pH adjustment while reducing processing time and improving leather quality.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data Specifications verified by CNFX Industrial Index (v2.6.03) for Leather and Related Product Manufacturing sector.

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