High Purity Calcium Hydroxide Powder

Our High purity calcium hydroxide powder is refined from high-grade limestone through multiple processes including high-temperature calcination, two-stage precise digestion, purification classification and ultra-fine grinding. The effective content of calcium hydroxide is stable above 95%, and the impurity content is controlled at an extremely low level. The product has the core characteristics of high whiteness, strong reaction activity, uniform particle size and less residue, and is an indispensable high-purity alkaline raw material for high-end environmental protection, food and pharmaceutical, fine chemical, electronic industry and other fields.

Different from ordinary industrial-grade hydrated lime, our High purity calcium hydroxide powder greatly reduces hydrochloric acid insoluble matter, heavy metals and undigested residue through process purification, with higher product purity and more thorough reaction. Under the same dosage, it has stronger alkalinity and produces less by-product sludge. By precisely controlling digestion temperature and classification process, we endow the product with larger specific surface area and faster reaction rate, performing excellently in precision reaction and deep treatment scenarios. Each batch of High purity calcium hydroxide powder undergoes full indicator testing before leaving the factory to ensure it meets high-purity standards and meets the strict requirements of high-end fields for raw material purity.

● High-end water treatment: Used for precise neutralization and heavy metal removal in drinking water advanced treatment, electronic industrial wastewater and photovoltaic fluorine-containing wastewater, avoiding secondary impurity introduction.

● Food and pharmaceutical auxiliary: Used as food additive calcium source and pharmaceutical excipient pH regulator, complying with food-grade safety standards with strict impurity control.

● Fine chemical synthesis: Used as acid scavenger and catalyst carrier in organic synthesis reactions, reducing side reactions and improving product yield and purity.

● Electronics and new materials: Used for electronic-grade phosphoric acid neutralization and high-end filler preparation, with low impurities avoiding impact on product electrical and optical properties.

● Deep flue gas desulfurization: Suitable for flue gas desulfurization scenarios with high emission standards, with high reaction efficiency and high-purity by-product gypsum.

The production and testing of our High purity calcium hydroxide powder strictly follow a number of national and industry standards. The core products meet the high-purity index of HG/T 4120-2009 Industrial Calcium Hydroxide, and food-grade products meet the requirements of GB 1886.214-2016 National Food Safety Standard - Food Additive Calcium Hydroxide. Third-party authoritative inspection reports (such as SGS, Huace) can be provided to support customers' qualification audit and supplier access, helping customers enter high value-added fields such as food, pharmaceutical and electronics.

In response to the personalized needs of different high-end applications, we can provide customized product solutions of High purity calcium hydroxide powder. We can adjust particle size distribution, whiteness index and impurity control level, and also provide customized production of food grade, pharmaceutical grade, electronic grade and other grades. Meanwhile, we support laboratory small-batch customization and industrial large-batch stable supply, adapting to different needs of R&D pilot and large-scale production, and assisting customers in R&D and mass production of high-end products.

We have established a high-purity product quality control system stricter than industry standards, covering the whole process of raw ore selection, production process and finished product delivery. Raw ore preferentially selects high-calcium low-impurity ore layers, and closed digestion and purification processes are adopted in production to avoid pollution introduction; the finished product laboratory is equipped with precision testing equipment such as atomic absorption spectrometers to test key indicators such as calcium hydroxide content, heavy metals and insoluble matter batch by batch. Each batch of products can be accompanied by a factory inspection report to ensure traceable and verifiable quality.

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