Hindustan Zinc Refined Metal Capacity Target Signals Major Indian Zinc Expansion

Hindustan Zinc

Hindustan Zinc refined metal capacity could nearly double by FY2030 as the Indian producer advances a major expansion programme. The company aims to lift refined metal capacity from 1.12mn t/yr today to 2mn t/yr by the April 2029-March 2030 fiscal year.

Hindustan Zinc refined metal capacity growth will begin with an approved 250,000 t/yr integrated zinc smelter expansion at Debari. The project will raise total refined metal capacity to 1.38mn t/yr, with completion targeted in the second quarter of FY2028-29.

Hindustan Zinc refined metal capacity could then rise further through two additional proposed integrated smelter projects, one for zinc and one for lead. These projects remain subject to board approval but would take total capacity to the company’s 2mn t/yr target.

The expansion is strategically important for India’s metals supply chain. Zinc and lead are essential for galvanised steel, infrastructure, batteries, automotive components, construction and industrial manufacturing.

Debari Expansion Anchors HZL’s Smelting Growth

The Debari zinc smelter expansion is the first major approved step in HZL’s capacity roadmap. The 250,000 t/yr project will strengthen the company’s downstream processing base and increase its ability to convert mined metal into refined output.

This matters because mined metal growth alone does not create refined supply. Smelting and refining capacity must expand in parallel if India wants more domestic zinc availability for steel galvanising and industrial use.

HZL delivered record mined metal output of 315,000t in January-March. This was up 14% from the previous quarter and 2% from a year earlier.

Full-year mined metal production reached a record 1.11mn t in FY2025-26, up from 1.09mn t a year earlier. Higher ore output and improved grades at the company’s underground mines in Rajasthan supported the increase.

However, refined metal sales slipped slightly to 1.04mn t from 1.05mn t a year earlier. Debottlenecking work at the Chanderiya and Dariba smelters weighed on output.

That contrast shows why smelter investment is central to the company’s growth plan. HZL has strong upstream production, but refined metal capacity and operating stability will determine how much value it captures.

Silver Capacity Adds Energy Transition Exposure

HZL is also targeting major growth in silver production. The company aims to lift silver capacity to 1,500 t/yr by FY2029-30.

Saleable silver production rose by 11% from the previous quarter to 176t in January-March. Full-year silver output reached 627t.

The silver target adds another strategic layer to HZL’s expansion. Silver demand is supported by solar panels, electric vehicles, electronics and electrical applications.

This gives HZL exposure beyond traditional zinc and lead markets. As India expands solar power, electrification and electronics manufacturing, domestic silver availability could become more valuable.

The company’s integrated position is important. HZL can link mining, smelting, refining and by-product recovery, giving it a stronger platform than producers focused only on one stage of the value chain.

For India, the expansion supports domestic metals security. Higher zinc, lead and silver capacity can reduce import exposure and strengthen supply for infrastructure, renewable energy and manufacturing.

The key challenge will be execution. HZL must complete the Debari expansion, secure approvals for the next smelter projects and maintain mined metal growth from Rajasthan.

The Metalnomist Commentary

HZL’s growth plan shows that India is building deeper domestic capacity in core industrial metals, not only critical minerals. The combination of zinc, lead and silver expansion gives the company a stronger role in infrastructure, galvanised steel and energy transition supply chains.