Maori-owned Miraka is well established in the New Zealand dairy-processing industry with strong values founded on the cultural beliefs of its owners.
Located in Mokai, on New Zealand’s central North Island, Miraka is unique within the dairy industry. The company’s milk supply is sourced from 107 local farms within an 85km radius of the factory, delivering a farm-fresh advantage and superior quality products with a global reach to more than 23 countries.
Miraka uses sustainable and renewable geothermal energy and state-of-the-art manufacturing processes, resulting in the power and capacity to process more than 250 million litres of milk into powders and UHT products every year.
Meeting increasingly stringent consumer and regulatory demands is a continual challenge for all dairy manufacturers. Complex challenges such as consumer demand, product specifications, regulatory compliance and fluctuating costs place strategic importance on continually improving performance and profitability.
With a strong commitment to continuous improvement of current manufacturing assets, Miraka invested in a solution to optimise their milk powder process. Capacity was maximised by driving to process constraints.
Yield was optimised through improved targeting and reduction of variability of milk powder moisture, protein, and fat. The evaporator solids and drying profile was balanced to reduce energy consumption.
Raw milk is collected from dairy farms daily and transported to milk powder production plants. A portion of the raw milk is separated into skim milk and cream. The milk is typically standardised by blending raw milk, skim milk, lactose, and permeate to meet international standards.
The standardised milk is then concentrated in multi-effect evaporators and spray dried to form powder. Optimal operation of these processes is essential to reduce costs, maximise capacity and meet final product quality specifications.