Hindustan Zinc Ltd (HZL) is a mining and smelting company. It carries out production of zinc, lead, silver, commercial power, and alloys. The company operates lead-zinc mines, hydrometallurgical zinc smelters, lead smelters, pyro metallurgical lead-zinc smelter, sulphuric acid, and captive power plants. Its major mining assets include Rampura Agucha Mine, Sindesar Khurd Mine, Zawar Mining Complex, Rajpura Dariba Mine and Kayad Mine.

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HZL’s R&D initiatives focus on process innovations and sustainable approaches to achieve circular economy goals. The company has developed novel flotation reagents and made modifications in hydro and pyrometallurgical circuits to improve concentrate grade and metal purity. The company has also filed patents for technologies enhancing silver recovery and waste recycling. Strategic partnerships have been formed to advance zinc battery technology and zinc alloys development. The R&D team is equipped with advanced instruments and facilities to support these initiatives. The R&D unit of HZL is responsible for process innovations, promoting sustainable approaches, and collaborating with external technical expertise to drive industry advancements. The unit focuses on improving concentrate grade, metal purity, and waste recycling, as well as developing energy storage solutions and zinc alloys. It has secured 2 Indian patents (IN 530897 and IN 541547) and filed an additional patent for boosting lead and silver recovery. The company has formed strategic alliances with institutions like IIT Madras and JNCASR for zinc battery development and with various organizations for waste-to-wealth initiatives. In FY2025, the company spent INR102.6 million on R&D, which accounted for 0.03% of the company’s revenue.