AZA 0814 APPARATUS FOR REACTIVITY OF QUICKLIME

Description

Quicklime Reactivity Apparatus is a specialized laboratory instrument designed to evaluate the thermal reactivity of quicklime (CaO) when mixed with water. This reaction, known as slaking, releases heat and forms calcium hydroxide. Measuring the temperature rise over time allows researchers and quality control technicians to assess the chemical quality, particle size, and reactivity rate of quicklime.

The apparatus is indispensable in laboratories dealing with lime-based construction materials, cement additives, and metallurgical operations. Reactivity plays a critical role in determining the performance of quicklime in various applications, including soil stabilization, water treatment, and chemical manufacturing.Quicklime Reactivity Apparatus, Lime Reactivity Test, Reactivity of Quicklime.

This apparatus conforms to Indian and international standards, particularly IS 1514:1990 – Methods of Sampling and Test for Quicklime and Hydrated Lime and ASTM C110 – Standard Test Methods for Physical Testing of Quicklime, Hydrated Lime, and Limestone.

 How the Test Works:

The test involves adding a specified quantity of water to a known mass of quicklime inside a calorimeter-type vessel, then recording the temperature at regular intervals. The temperature rise (∆T) is an indicator of the rate and extent of the reaction, which corresponds to the quicklime’s quality and usability.

 Features and Benefits:

• Complete Set: Includes reaction flask (borosilicate), high-precision thermometer or temperature probe, stirrer, insulated reaction chamber, and support stand.

• High Sensitivity: Capable of detecting subtle variations in exothermic response, critical for quality assurance.

• Standardized Procedure: Compatible with both IS and ASTM testing methodologies.

• Durable Construction: Laboratory-grade glass and chemical-resistant components ensure long-lasting performance.

• Data Logging Option: Optional models may include digital temperature sensors for automated data recording.

 Applications:

• Lime Production Quality Control: Assess quicklime quality before packaging or use.

• Cement Additive Testing: Analyze reactivity in blended cement mixes.

• Construction Material Testing: Evaluate lime for soil stabilization or pozzolanic reactions.

• Educational Use: Demonstrates exothermic chemical reactions in academic labs.

• Chemical Process Validation: Ensures consistency in processes where lime reactivity impacts product performance.

 Specifications:

Frequently Asked Questions (FAQ):

Q1: What is the purpose of the Quicklime Reactivity Apparatus?
It is used to determine the exothermic heat released when quicklime reacts with water — an indicator of its chemical quality and reactivity.

Q2: Which standards does this apparatus follow?
It complies with IS 1514:1990 and ASTM C110.

Q3: Can it be used with digital temperature sensors?
Yes, some models support digital probes and data logging for advanced testing and automation.

Q4: What industries benefit from this test?
Cement, construction, metallurgy, and water treatment industries regularly use this apparatus to verify quicklime quality.

Q5: What is a typical reactivity value for good quality lime?
It depends on the lime source, but a sharp temperature rise above 60–70°C within 3–5 minutes is typically indicative of high-quality quicklime.