CHEMICAL REACTION Double Displacement (Metathesis)...

CHEMICAL REACTION Double Displacement (Metathesis) Reaction: Copy Edit NaNO₃ + KCl → KNO₃ + NaCl When mixed in water, the less soluble salt (NaCl) crystallizes first. The more soluble KNO₃ stays in solution and is recovered via evaporation and crystallization. 🏭 MANUFACTURING PROCESS ✅ Step 1: Dissolution Dissolve sodium nitrate and potassium chloride in hot water in a reactor tank. Maintain temperature at around 70–80°C to ensure full dissolution. ✅ Step 2: Crystallization Cool the solution gradually to 25–30°C. Sodium chloride will crystallize out first (less soluble). Filter out sodium chloride crystals. ✅ Step 3: Potassium Nitrate Recovery The remaining solution, rich in KNO₃, is further evaporated or cooled to crystallize potassium nitrate. Filter, wash, and collect pure KNO₃ crystals. ✅ Step 4: Drying Dry the KNO₃ crystals at 50–60°C in a tray or rotary dryer. 📦 YIELD ESTIMATE (Per 100 kg batch) Material Quantity Sodium Nitrate ~85 kg Potassium Chloride ~75 kg Water ~150–200 L Potassium Nitrate Output ~120 kg (depending on process efficiency) 🧯 SAFETY & HANDLING Potassium nitrate is a powerful oxidizer – keep away from organic and flammable substances. Use non-sparking tools, PPE, and store in cool, dry conditions. 🏭 USES OF POTASSIUM NITRATE IN DIFFERENT INDUSTRIES Industry Application Fertilizers High-value NPK fertilizer, provides nitrogen (13%) and potassium (46%) Explosives & Pyrotechnics Oxidizer in gunpowder, fireworks, flares, and propellants Glass Industry Improves thermal shock resistance and clarity in glassmaking Pharmaceuticals Used in tooth desensitizing agents and specialty formulations Food Preservation As a curing agent (E252) in meats (regulated use) Heat Treatment of Metals Salt bath for case hardening and nitriding Electronics & Ceramics Used in fluxes, glazes, and ceramic coloring formulations Rocket Propellants Solid propellant component due to its oxidizing nature