Complete Guide to
Ceramic Factory
Automation — Morbi

Morbi, Gujarat is home to one of the world's largest concentrations of ceramic tile manufacturers — over 800 factories producing floor tiles, wall tiles, vitrified tiles, and sanitaryware. The industry generates over ₹35,000 crore annually and employs hundreds of thousands of workers.

Yet despite its massive scale, many Morbi ceramic factories still operate with manual controls, fixed-speed motors, and relay-logic electrical panels from the 1990s. The result: high energy bills, inconsistent product quality, frequent breakdowns, and rising operational costs.

This guide explains — practically and specifically — how modern automation technology changes this picture. No jargon, no theory. Just a clear breakdown of what to install, where, and what the real-world benefit looks like.

1. Ball Mill Automation — The Biggest Energy Saving Opportunity

Ball mills grind raw materials (feldspar, silica, clay) into ceramic slip. They're typically the largest electrical consumers in a tile factory — often running 12 to 24 mills simultaneously, each with a 30–75kW motor.

The problem: most ball mills run at full speed from start to finish, regardless of the batch stage. But grinding efficiency actually improves at lower speeds during the final stages of a batch — meaning full-speed operation wastes electricity without improving throughput.

Solution: VFD + PLC Batch Control

• Install a VFD (Variable Frequency Drive) on each ball mill motor — Siemens SINAMICS G120, Delta VFD-C, or ABB ACS310 for this range
• Use a PLC timer to automatically reduce speed from 100% to 70% after the first 4 hours of grinding — the point where slip particle size is already approaching spec
• Add an interlocking system: mills stop automatically when batch timer expires, rather than relying on operator attention

2. Spray Dryer Automation — Quality and Gas Savings

The spray dryer converts ceramic slip into powder (atomised water evaporation using hot gas). It's the second-largest energy consumer in a tile factory — and the most sensitive to poor control. Inconsistent outlet temperature means inconsistent powder moisture, which directly affects tile strength and surface quality.

Solution: PLC Combustion Control + VFD Blowers

• Replace pneumatic/manual gas valve control with a PLC (Delta DVP or Siemens S7-1200) managing proportional gas valves
• Add thermocouple inputs at inlet, outlet, and chamber — PID control maintains outlet temperature within ±2°C
• Install VFDs on atomiser motor and exhaust fans — reduce blower speed during low production periods
• HMI panel shows real-time temperature trend, gas consumption, and powder moisture setpoint

3. Kiln Automation — Consistent Firing, Consistent Tiles

The kiln fires ceramic tiles at 1150–1200°C. Temperature uniformity across all zones is critical — a 10°C variation can cause colour inconsistency, warping, or dimensional variation that leads to rejection. Most Morbi kilns use legacy thyristor controllers for zone heating — these work, but don't provide data logging or remote visibility.

Solution: PLC Zone Control + SCADA

• Replace legacy controllers with PLC-based zone temperature control — Siemens S7-1500 for large kilns
• Each zone: thermocouple input → PID output → gas burner proportional valve
• SCADA system logs all zone temperatures at 1-minute intervals — enables post-firing analysis and quality tracing
• VFD on kiln car drive for precise tile throughput speed control
• Alarm system: SMS to plant manager if any zone deviates more than 5°C from setpoint

4. Pressing Machine Automation

Hydraulic press machines form tiles from powder. The pressing cycle — fill, first press, second press, demold — is critical for tile thickness and density uniformity. Manual operators vary cycle timing, leading to inconsistency between shifts.

Solution: PLC Cycle Control

• PLC controls fill valve, first and second press timers, ejector, and conveyor transfer
• Press pressure monitoring via pressure transducer — alert if die pressure out of range
• Recipe management: different tile sizes stored as HMI recipes, operator selects from touchscreen
• Batch counter tracks tiles produced per shift for production reporting

5. SCADA — The Control Room for Your Entire Factory

With ball mills, spray dryers, kilns, and presses all automated with PLCs, the next step is connecting them all to a single SCADA (Supervisory Control and Data Acquisition) system in the control room or manager's office. A good SCADA gives you:

• Real-time overview of every machine's status on a single screen
• Historical data: energy consumption, temperatures, production counts — exportable to Excel
• Alarm management: all faults logged with timestamp and operator acknowledgement
• Remote access: plant manager can view status from phone or tablet
• Shift report generation: daily/weekly production summaries with zero manual effort

Where to Start — A Practical Roadmap

You don't need to automate everything at once. Here's the recommended sequence based on ROI:

• Month 1–3: Install VFDs on ball mills — lowest cost, highest energy saving, fastest payback
• Month 3–6: Spray dryer PLC combustion control — quality improvement + gas savings
• Month 6–12: Kiln zone control upgrade — quality consistency and traceability
• Year 2: SCADA integration — connect all systems for factory-wide visibility
• Year 2–3: Press machine automation and batch reporting