// Our Innovation

the most eco-friendly nickel and cobalt processing technology that will set a new standard in the hydrometallurgy industry

STAL Technology™, or Step Temperature Acid Leach Technology, is an innovative and highly efficient, zero-waste Hydrometallurgy-based technology to recover metals and minerals in lateritic ores without environmental impact.

Designed to produce high-grade nickel, cobalt, and other valuable products, the technology offers one of the lowest capital and operating costs among other current technologies. STAL Technology™ has been tested and validated to provide the most effective and profitable process in treating an entire profile of a laterite deposit, from low-grade Limonite to Saprolite and any transition zone. The technology has gained nationwide recognition for its potential in accelerating the Indonesian government’s nickel-based downstream industry plan.

Future Plan

Through further research & development, HMI strive to maximize the value of limonite ore in a Nickel-based value chain


Nickel Extraction
STAL Technology

• Fill deficit in Ni demand

• Become the lowest-cost class 1 nickel producer

• Leverage from Hydrotech’s continuous R&D in value creation from by-products

NCM & Cathode
Cathode Processing Co.

• Create maximum downstream value

• Capitalize on direct MHP-NCM technology to become the lowest cost producer

Waste Management

• Capitalize on wastes produced by STAL and create a feasible business model

• Focus on future recycling of used batteries

Future Development
Nickel By-products

• Future industries created for the development of byproducts from STAL Technology

Nickel Prospect

Nickel plays a crucial role in lithium-ion battery chemistries used to power electric vehicles (EV). As the demand for Li-ion batteries growing more rapidly in the recent years, a sea change is brewing in the nickel market.


Fast Growing Demand

  • Electric vehicles is expected to increase from 1.6 million in 2018 to 6.8 million in 2023
  • Demand for nickel for lithium-ion batteries is expected to quadruple over this periode from 3%-4% in 2019
  • The global lithium ion batteries market size is expected to grow from 44.2 billion in 2020 and is expected to reach USD 94.4 billion by 2025, at a CAGR of 16.4% during the forecast periode

Recent Nickel Price Growth

  • The export ban on low-grade nickel by the Indonesian goverment has further pushed the price of nickel to soar
  • in 2019, the price of Class 1 nickel (99.8% Ni) on the London Metal Exchange (LME) reached up to US $ 16,000 / Wet Metric Tons

Abundant Laterite Resource

  • Indonesia’s amount of untapped nickel laterite reserves is estimated to reach more than 9.3 billion metric tons
  • Sample specification of Indonesia’s nickel laterite match with the specification of battery material

Click the link below to find out more about how STAL Technology™ able to provide solutions to today's challenges in the nickel industry