colorimeter.com CR8 Applied to Slag Color Measurement

GUANGZHOU, CHINA, October 18, 2025 /24-7PressRelease/ — Recently, Threenh Technology collectively launched a significant scientific analysis achievement with Peking University. On September 4, 2025, Threenh Technology (colorimeter.com) collaborated with the crew from University of Science and Technology Beijing (State Key Laboratory of Advanced Metallurgy) and Beijing University of Science and Technology (Institute of Intelligent Aging) to publish a major paper titled Synthesis and characterization of refining slag: From industrial waste to eco-friendly pigments within the journal Ceramics International.

This analysis achievement marks a significant breakthrough within the discipline of environmental safety. By precisely measuring slag shade knowledge to analyze the connection between its composition, temperature, and shade, the analysis knowledge exhibits that totally different coloured pigments may be obtained by exactly controlling the basicity and firing temperature of slag. This supplies a scientific foundation for utilizing slag as a uncooked materials for pigment manufacturing, representing one other main breakthrough within the environmental safety discipline and promising important contributions to international environmental efforts.

For the evaluation of shade adjustments in slag samples below numerous ba- sicity and temperature circumstances, this examine utilized a CR8 spectrocolorimeter from colorimeter.com, together with the TS70 sequence colorimeters of verticar multifunctional modules, as proven in Fig,2.The spectrocolorimeter is predicated on the D/8 geometry, which entails diffuse illumination and eight° directional reception. It makes use of high-precision spectroscopic expertise coupled with a full-spectrum LED gentle supply, permitting for correct measurement of the spectral reflectance of samples throughout the wave. size vary of 400-700 nm.From these measurements, the colori- metric values (comparable to L.*, a*, b*) of the samples may be calculated. The remark gentle supply is the D65 customary illuminant,with an observer angle of 10°, making certain the consistency of the measurement outcomes with human visible notion. The TS70 sequence of vertical multifunctional elements, by mounting the instrument inverted, at the side of a light-weight protect and a tradition dish, ensures the soundness of the sunshine path and the uniformity of the samples throughout the measurement course of. The slag samples had been mechanically crushed and sieved to a dimension vary of 0.425 mm-0.6 mm, and positioned in a tradition dish for spectral reflectance measurement utilizing the instrument, with the chromaticity values and shade distinction values recorded. This methodology gives a number of benefits, together with high-precision measurement, multifunctionality, comfort, and robust adaptability to numerous environments. It effectively acquires experimental knowledge and supplies dependable technical help for an in-depth investigation into the mechanisms by which alkalinity and temperature have an effect on the colour of slag samples.

As a worldwide chief in precision shade measurement options, 3nh is pioneering a brand new period of sustainability with its CR8 Spectrocolorimeter—turning ore slag, a longstanding industrial waste problem, into commercially viable, value-added pigments. This breakthrough not solely showcases the ability of superior shade testing but in addition aligns industrial innovation with environmental safety, setting a brand new customary for waste reuse.

Turning Industrial Waste into Valuable Resources

Ore slag, an inevitable byproduct of metal, copper, and magnesium refining, has lengthy plagued industries with its large quantity, environmental dangers, and restricted reuse choices. Traditional slag recycling strategies are energy-intensive, producing extra waste and counting on advanced high-temperature processes to combine slag with cement—providing little when it comes to worth creation.

Now, new analysis is redefining slag’s potential: by adjusting its mineral composition, including focused components, and optimizing processing circumstances, ore slag may be remodeled into pigments spanning a wealthy shade spectrum—from reddish yellow to bluish inexperienced. Unlike typical colorants, which depend on resource-heavy mining, these slag-based pigments are a sustainable various that reduces reliance on virgin supplies.

The CR8 Spectrocolorimeter: The Key to Color Accuracy & Viability

For slag-based pigments to succeed commercially, shade accuracy and batch consistency are non-negotiable—and the 3nh CR8 Spectrocolorimeter is engineered to ship precisely that. Its specialised options are tailor-made to deal with the distinctive calls for of slag pigment evaluation:

• D8 Geometry: Adheres to worldwide requirements with diffuse illumination and eight° directional viewing, making certain constant measurement throughout samples.

• Full-Spectrum LED Technology: Provides secure gentle output throughout the 400–700 nm seen spectrum, eliminating gentle fluctuations that skew outcomes.

• High-Precision L, a, b Detection*: Captures ultra-fine shade variations, enabling correct classification of pigments and making certain they meet industrial shade requirements.

• User-Friendly Vertical Module: Designed for simple testing of powders and irregular slag samples, simplifying workflow for researchers and technicians.

• D65 Illuminant Calibration: Matches human visible notion, making certain pigment colours carry out as anticipated in real-world functions (e.g., coatings, ceramics).

These options allow rigorous colorimetric evaluation of slag pigments, linking vital processing components—slag composition, firing temperature, particle dimension, and cooling methodology—to pigment high quality. Without this precision, attaining constant, market-ready pigments can be inconceivable.

Key Research Findings: Unlocking Slag Pigment Potential with CR8

Using the CR8 Spectrocolorimeter, researchers performed in-depth evaluation of slag samples with various basicity (a measure of chemical composition) and firing temperatures, uncovering vital insights that information pigment manufacturing:

1.Basicity Drives Color: Slag with decrease basicity (_0.39) produces reddish yellow pigments however causes extra crucible erosion throughout processing. In distinction, increased basicity slag shifts to a bluish inexperienced hue due to adjustments in its mineral part.

2.Temperature Controls Brightness: Firing temperature straight impacts pigment lightness (L* worth). Slag fired at 1100 °C yields lighter pigments in contrast to these processed at 1000 °C or 1200 °C.

By correlating processing circumstances to pigment properties with exact, constant knowledge, the CR8 not solely validates the analysis’s credibility but in addition paves the best way for large-scale industrial manufacturing of slag-based pigments.

Beyond Pigments: CR8’s Role in Quality Assurance & Sustainability

The CR8’s influence extends past shade measurement. Its means to analyze slag shade additionally supplies helpful diagnostic insights: shade variations can point out adjustments in microstructure, erosion patterns, or the formation of latest crystalline phases—vital for high quality assurance and understanding materials conduct. This makes the CR8 an indispensable instrument for each analysis labs and large-scale manufacturing amenities.

By enabling slag-to-pigment recycling, the CR8 contributes to three core sustainability objectives:

• Reducing landfill waste by repurposing slag that may in any other case be discarded.

• Minimizing the environmental footprint of colorant manufacturing by changing mined supplies with waste.

• Powering the creation of eco-friendly merchandise, from inexperienced ceramics and coatings to ornamental supplies.

Looking Ahead: Expanding the Boundaries of Slag Innovation

The 3nh CR8 is only the start of slag’s transformation. While its present focus is on pigment manufacturing, future functions might lengthen additional—utilizing shade evaluation to forecast materials stability, corrosion resistance, and different industrial properties. This would open new doorways for slag in high-performance functions, from building supplies to superior composites.

“A reliable color measurement tool like the CR8 is changing how industries view metallurgical byproducts,” says a 3nh consultant. “It’s not just about recycling waste—it’s about creating new market value, reducing environmental impact, and reimagining what industrial waste can be.”

study extra https://www.threenh.com/Product_News/3nh-CR8-Ore-Slag-Color-Testing.html

With over 20 years of experience in shade measurement, 3nh is a trusted supplier of spectrophotometers, colorimeters, and imaging options. Serving industries together with coatings, plastics, textiles, ceramics, and analysis institutes, 3nh is dedicated to delivering modern, exact, and sustainable shade measurement instruments that clear up real-world challenges. Threenh Technology has lengthy engaged in in-depth analysis within the discipline of shade measurement in collaboration with well-known international enterprises and establishments. It will proceed to work hand in hand with companions to contribute extra to human society and scientific analysis undertakings.

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