600kg/h Automatic Nuts Roasting Line Delivered to India for Industrial Barley Processing

Jinan TINDO has successfully shipped a complete turnkey automatic roasting line to an industrial grain processor in India. Designed for high-volume barley roasting at 600 kg per hour, the system integrates four core modules — automatic elevator feeding, electromagnetic induction roasting, multi-stage cooling, and storage — into a single continuous production flow.

Built entirely from SUS304 stainless steel and controlled via a full PLC touchscreen, this line represents a significant upgrade from India's prevalent batch-roasting operations, replacing multiple semi-automatic machines with one seamless, high-efficiency system.

The Client's Challenge: From Batch to Continuous Barley Roasting

Barley is a staple ingredient across India's food and beverage sectors — used in malt production, traditional health drinks (sattu), roasted barley tea, bakery flour blends, and animal feed. Indian barley processing has long relied on drum roasters and manual batch systems, which create three persistent problems:

The client — an established grain processor supplying malted barley to breweries and health-food manufacturers across Maharashtra and Gujarat — needed to scale from 2,500 kg/day to 5,000 kg/day without adding shifts or factory floor space.

The TINDO Solution: 4-Module Continuous Roasting Line

Module 1: Automatic Bucket Elevator Feeder

Raw barley is loaded into a floor-level hopper. A food-grade bucket elevator lifts the grain to the roaster infeed at a controlled rate, synchronized with the roasting drum speed. There is vibrator to help the barley feeded uniformly and steady.

• Capacity: 600 kg/h (matched to roaster throughput)

• Material: SUS304 buckets, chains, and casing

• Dust control: Enclosed design with top-mounted dust extraction port

• Safety: Anti-runback ratchet, overload sensor, emergency stop lanyard

Eliminates manual lifting and ladder climbing — the operator loads raw barley at ground level, and the machine handles the rest.

Module 2: Electromagnetic Induction Roasting Drum

This is the heart of the line — and where TINDO's engineering diverges from conventional gas roasters.

How electromagnetic induction roasting works:

Conventional gas roasters heat the drum from the outside — flame heats air, air heats drum wall, drum wall heats barley. This triple-layer heat transfer is inherently slow and inefficient.

Electromagnetic induction generates heat directly within the drum wall itself — no flame, no hot air gap, no intermediate medium. The drum becomes the heating element.

Technical specifications:

Why this matters for barley:

Barley has a thinner husk than peanuts or sunflower seeds. It scorches easily if exposed to temperature spikes. The induction system's ±2°C precision means every grain exits at exactly the target roast level — critical for maltsters who need consistent enzyme activity and brewers who demand uniform color for tea production.

For smaller batch operations, see our Batch Type Nut Roaster range.

Module 3: Multi-Stage Cooling Conveyor

Hot barley straight out of the roaster continues to cook from residual heat — a phenomenon called carry-over roasting. Unchecked, it deepens the roast beyond specification and wastes the precise temperature control of the induction system.

The TINDO cooling conveyor solves this with three sequential stages:

• Belt material: SUS304 wire mesh, food-grade

• Belt width: 800 mm

• Cooling time: 8-12 minutes (adjustable via belt speed)

• Dust extraction: Integrated cyclone separator captures loose husk particles

Module 4: Storage Tank with Level Sensor

Cooled barley is conveyed to a SUS304 storage tank with:

• Capacity: 2,000 liters (approximately 1,400 kg of roasted barley)

• Level sensor: Ultrasonic, with high/low alarms on the PLC panel

• Discharge: Pneumatic slide gate, connects to packing machine or bulk bag filler

• Inert gas port: Optional nitrogen blanket for extended storage of roasted grain

The tank bridges continuous roasting with batch packing operations — the roaster never stops, and the packing line draws from the buffer tank at its own pace.

Full Technical Specifications

Why Electromagnetic Induction Over Gas for Indian Grain Processors

India's industrial gas supply is region-dependent and price-volatile. Electromagnetic induction offers three structural advantages for Indian food manufacturers:

1. Energy Cost Stability

Electricity pricing in India is regulated at the state level with predictable industrial tariffs. Gas prices fluctuate with global LNG markets. For a 600 kg/h line running two 8-hour shifts:

2. Zero On-Site Emissions

Gas roasters require flue gas exhaust systems and, in many Indian states, periodic pollution control board inspections. Induction roasters produce zero combustion emissions — no chimney, no exhaust gas treatment, no regulatory friction.

3. Faster Startup = More Productive Hours

Gas roasters need 25-35 minutes to preheat the drum and stabilize temperature. Induction roasters reach operating temperature in 5-8 minutes. Over 300 operating days with two startups per day, that's 170-270 extra production hours per year.

The Indian Barley Processing Market

India is the world's third-largest barley producer (after Russia and Australia), with annual output of approximately 1.8 million metric tons. Key demand drivers:

• Malt production — India's beer industry is growing at 7-9% CAGR, driving maltster demand for consistent roasted barley

• Health beverages — Roasted barley tea and sattu (roasted gram flour) are traditional products now being industrialized by FMCG brands

• Animal feed — Roasted barley improves digestibility for dairy and poultry feed

• Export market — Indian malt is price-competitive in Middle Eastern and Southeast Asian markets

Industrial roasters capable of 500-1,000 kg/h continuous output are the fastest-growing equipment segment in this market, as medium-scale processors upgrade from batch to continuous operations.

Factory Acceptance Testing

Before shipment, the line underwent full FAT at TINDO's Jinan facility:

Related Equipment

• Continuous Nuts Roasting Machine

• Batch Type Roaster

• Nuts Roasting Machine — Full Range

• Automatic Chicken Nuggets Processing Line

Looking for Industrial Roasting Solutions?

With 20+ years of experience manufacturing continuous roasting systems for grain, nut, and seed processors across 50+ countries, TINDO provides custom-engineered solutions from 100 kg/h pilot lines to 1,500 kg/h full-production systems.

Contact our engineering team →

info@tindotech.com | WhatsApp: +86 185 6009 1508