Sawan Jasoliya

In my decades of working with cement plants across Asia, Europe and the Middle East on optimization and operational excellence, I have seen a consistent pattern. While most plants celebrate rising Thermal Substitution Rates (TSR) of 50-70%+, very few openly discuss the hidden operational challenges that accompany higher Alternative Fuel (AF) usage. Alternative Fuels do not simply replace coal or pet coke. They fundamentally alter flame characteristics, heat transfer mechanisms and secondary/tertiary air behavior inside the kiln. If not properly managed, these changes quietly erode the expected benefits - lower fuel cost, reduced CO₂ and stable clinker quality. This is one of the most critical yet under-discussed aspects of modern pyro-processing. Understanding the Fundamental Shift Conventio...

Note: RCA के बारे में मैं हमेशा कहूंगा की RCA यानि रुट कोज़ एनालिसिस तभी या साथ- साथ हो जाना चाहिए जब आप किसी स्टॉपेज या फेलियर के लिए करेक्टिव एक्शन लेकर प्लांट को रीस्टार्ट करते हो। बाद में किया गया RCA  बेकार है। यह पहली बात है।  दूसरी और उससे भी ज्यादा जरुरी बात यह है की जो बंदा RCA कर रहा है उसी के ऊपर RCA का आख़री एक्शन आकर रुकेगा। अगर ऐसा नहीं हो तो मान लीजिये की या तो  RCA अधूरा या गलत है या फिर RCA किसी ओर बंदे ने किया है।   Regarding RCA - Root Cause Analysis - I would always assert that it should be conducted either simultaneously with, or immediately following, the implementation of corrective actions taken to restart the plant after a stoppage or failure.  An RCA performed at a later stage is futile. That is the first point. The second, and even more critical, point is that the final action resulting from the RCA must ultimately rest with the very individual who conducted the analysis. If this is not the case, you can assume that the RCA is e...

It was 44°C in Ajmer, Rajasthan. My salesman, Ramesh, hadn't taken a single day off in 6 months. That morning, I told him: "I'm coming with you. Full day. Your route. Your pace. Don't slow down for me." He smiled - the kind of smile that says "Sir, you have no idea what you've signed up for." He was right. By 8 AM, we were already on our 6th outlet. By 10 AM, my shirt was completely drenched.  But here's what broke me - not physically, but mentally: Outlet #34. A small kirana, owner sitting on a wooden stool, half-asleep. Ramesh walked in, greeted him by name, asked about his daughter's board exams - then placed the order, arranged the shelf, and was out in under 4 minutes. I asked him later: "How do you know about his daughter?" He said: "Sir, I've been visiting him every Tuesday for 3 years. If I don't ask, he doesn't buy." That line stopped me cold. This man - earning ₹18,000 a month - had cracked something ...

PID (Proportional-Integral-Derivative) controllers modulate process variables (like speed or temperature) continuously to maintain a setpoint. Conversely, an Interlock is a binary (on/off) safety system that forces equipment to stop or prevent start-up if dangerous conditions exist. PID regulates; interlocks protect.  Key Differences Between PID and Interlock Function: PID: Provides continuous, proportional control to keep a process variable close to a setpoint (e.g., maintaining 500 RPM). Interlock: Provides discrete, binary action (e.g., stop pump if pressure is \(>100\) PSI). Action Type: PID: Analog/Modulating (adjusts output from 0–100%). Interlock: Digital/Binary (On/Off, True/False). Operating Objective: PID: Efficiency, stability, and process regulation. Interlock: Safety, equipment protection, and hazard prevention. Typical Application: PID: Heater temperature control, flow rate regulation, speed control. Interlock: Emergency Shutdown (ESD) systems, preventing p...

The Backbone of Material Handling: Conveyors in Crushing & Screening Plants In any modern crushing and screening operation, conveyors are not just auxiliary equipment—they are the arteries of the plant, ensuring continuous, efficient, and controlled material flow. While crushers and screens often take the spotlight, the true productivity of a plant heavily depends on how effectively material is transferred between stages. Why Conveyors Matter More Than You Think A well-designed conveyor system directly impacts: Plant throughput (TPH) Operational efficiency Wear and tear on primary equipment Energy consumption Material segregation and quality A poorly configured conveyor can bottleneck even the most advanced crushing setup. Understanding Conveyor Capacity (TPH) The capacity of a conveyor is determined by a combination of variables: Where: A = Cross-sectional area of material (m²) V = Belt speed (m/s) ρ = Bulk density (kg/m³) Example: If: Belt width = 1000 mm Speed = 2.5 m/s Material...