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3nh CR8 Spectrocolorimeter Unlocks New Potential for Ore Slag Recycling and Eco-Friendly Pigment Production

10-10-2025 02:52 AM CET | Business, Economy, Finances, Banking & Insurance

Press release from: Getnews

/ PR Agency: Kjprnews
3nh CR8 Spectrocolorimeter Unlocks New Potential for Ore Slag

Shenzhen, China - 9 Oct, 2025 - 3nh, a global leader in precision color measurement solutions, is now able to use the CR8 spectrocolorimeter to transform ore slag waste into sustainable and value-added pigments. This first achievement illustrates a vital use of color testing to advance environmental protection along with industrial innovation.

Turning Waste Into Value

Ore slag, a byproduct of refining processes for steel, copper, and magnesium, has posed significant challenges in terms of volume, environmental hazards, and limited options for reusing the material. The energy-intensive slag reuse processes generate waste, residue, and complex high-temperature slag-cement mixed processes.

New research is paving the way for a more sustainable and value-added reuse of ore slag. Depending on the mineral composition, additives, and processing, different shades of slag yield pigments ranging from reddish yellow to bluish green. These pigments are a sustainable alternative to colorants harvested through mining.

The Role of 3nh CR8 in Color Accuracy

When it comes to pigments, color accuracy and color consistency are indispensable for pigments to be deemed commercially viable. 3nh CR8 Spectrocolorimeter helps in this regard. It has

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D8 Geometry (diffuse illumination with 8 degrees directional viewing) for compliance to international standards.

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Full Spectrum LED Implementation for Stable 400-700 nm Light Across the Visible Spectrum.

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High to extreme Accuracy Detection of L, a, b* values, for pigments to be classified accurately.

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Legibly and User Friendly Vertical Module Design for powders and irregular samples.

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D65 Illuminant Calibration to human vision for Reals World.

All of the above helps to do colorimetric analysis of pigments for the slag composition, temperature, particle size, method of cooling and slag composition. Without assessing these characteristics, consistency and quality of the pigments would be impossible to achieve.

Key Research Findings

Image: https://www.threenh.com/static/upload/image/20251009/3nh_CR8_Spectrocolorimeter.jpg [https://www.threenh.com/ColorReader/CR8.html]

With the use of CR8, researchers analyzed slag samples with differing basicities and firing slag temperatures. Results indicated that:

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Slags with lower basicities (



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