Push plate kiln application scenarios and process solutions for magnesium oxide materials Magnesium oxide (MgO) is an inorganic non-metallic material with high temperature resistance (melting point 2852°C), high insulation, and chemical corrosion resistance. The high-temperature processing (sintering, roasting, solidification) of its powders, compacts, ceramic components and other products places extremely high requirements on the equipment's temperature control accuracy, atmosphere stability, and continuous production capabilities. With its core advantages of ultra-high temperature adaptation, precise atmosphere control, and continuous operation, the push plate kiln has become the core equipment for large-scale and high-quality production of magnesium oxide materials. It is widely used in refractory materials, electronic ceramics, new energy, metallurgical chemical industry and other fields.

1. New energy field: production of magnesium oxide modified materials and components 1. Main products Lithium battery cathode material modifier (magnesium oxide coated ternary material, lithium iron phosphate), ceramic separator coating (magnesium oxide + aluminum oxide composite coating), photovoltaic glass clarifier (nano magnesium oxide) 2. Core process Magnesium oxide coating powder roasting (800-1200℃), ceramic separator coating curing (1000-1300℃), nano-magnesia powder sintering activation 3. Push plate kiln adaptation logic Low oxygen atmosphere control: sealed furnace design, air tightness ≤5kPa/h, can achieve low oxygen (oxygen content ≤50ppm) or inert atmosphere sintering, avoid oxidation of lithium battery cathode materials, and ensure electrochemical performance; Flexible process parameters: heating rate (adjustable at 1-10°C/min), holding time (adjustable at 1-4 hours), suitable for the production of magnesium oxide modified materials with different coating ratios, meeting the personalized process needs of new energy materials; Continuous efficiency: the daily processing capacity of the push plate kiln can reach several tons, suitable for the large-scale mass production of lithium battery materials, and the production cycle is shortened by 40% compared with batch equipment.  4. Key points for process optimization: Baking temperature: For ternary material modification, control it at 900-1000°C (to avoid excessive crystallization of magnesium oxide affecting the coating effect); Atmosphere type: nitrogen + a small amount of hydrogen (volume ratio 95:5), which can improve powder dispersion and coating uniformity; Material loading: use porous ceramic trays to ensure powder permeability and avoid local overheating and agglomeration.

2. Metallurgical and chemical industry: production of magnesium oxide functional materials 1. Main products: magnesium desulfurizer for metallurgy, chemical adsorbent (magnesia-based molecular sieve), catalyst carrier (magnesium oxide loaded with precious metals), high-temperature reactor lining 2. Core process Desulfurizer roasting activation (1000-1300℃), adsorbent solidification molding (1200-1400℃), catalyst carrier sintering (1400-1600℃) 3. Push plate kiln adaptation logic Flexible atmosphere control: supports air, inert, reducing atmosphere switching to meet different process requirements such as desulfurizer activation (air atmosphere), catalyst carrier reduction (hydrogen + nitrogen mixed atmosphere); Corrosion-resistant design: The furnace is made of corundum material that is resistant to acid and alkali corrosion, adapting to the corrosive environment during the reaction between magnesium oxide and chemical raw materials, extending the service life of the equipment; Modular expansion: the preheating section (800-1000°C) and cooling section can be added to realize the integrated processing of "preheating-activation-rapid cooling" of the desulfurizer, improving product activity and production capacity.  4. Key points for process optimization: Activation temperature: desulfurization agent roasting is controlled at 1100-1200°C (guaranteing magnesium oxide specific surface area ≥ 50m²/g, improving desulfurization efficiency); Atmospheric pressure: slightly positive pressure (0.02-0.05MPa) to prevent outside air from infiltrating and affecting product purity; Push plate material: The push plate is made of silicon nitride combined with silicon carbide, which has stronger wear and corrosion resistance and is suitable for the complex working conditions of chemical materials.

3. Other featured application scenarios 1. Production of magnesium oxide ceramic components Products: high-temperature furnace tubes, thermocouple protection sleeves, molten metal filters, aerospace high-temperature resistant liners; Process: densification sintering of ceramic components (1700-1800°C), gradient temperature treatment; Adaptation advantages: The ultra-high temperature stability and temperature zone uniformity of the push plate kiln ensure the component density (≥95%) and mechanical properties (bending strength ≥200MPa), and support the mass production of complex-shaped components.  2. Nano-magnesia powder sintering Products: electronic-grade nano-magnesia powder (particle size 50-200nm), pharmaceutical-grade high-purity magnesium oxide; process: powder agglomerate dispersion and sintering (1000-1200°C), purity purification and roasting; Adaptation advantages: Inert atmosphere protection prevents oxidation and agglomeration of nanopowders, continuous production improves powder batch consistency, and the push plate kiln can be equipped with a vibrating feeding device to further optimize the powder dispersion effect.  3. Production of magnesia-based composite materials. Products: magnesia-carbon fiber composite refractory materials, magnesium oxide-alumina composite ceramics, magnesium oxide-zirconia wear-resistant materials; process: sintering and solidification of composite materials (1500-1700°C), interface bonding strengthening treatment; adaptation advantages: the push plate kiln can customize the gradient temperature zone to achieve simultaneous sintering and interface fusion of different component materials. The atmosphere can be adjusted to prevent oxidation of reinforcing phases such as carbon fibers and ensure the comprehensive performance of composite materials.

   Summary: The core value of push plate kilns adapting to magnesium oxide materials. The core value of push plate kilns for magnesium oxide materials lies in **"high temperature compatibility + precise control + efficiency improvement"**: ultra-high temperature (1200-1800°C) and corrosion-resistant furnace design, matching the high melting point and strong alkaline material properties of magnesium oxide to avoid equipment loss and product deterioration; Multi-temperature zone precise temperature control and atmosphere regulation capabilities ensure the density, purity, and performance consistency of magnesium oxide products (refractory materials, electronic ceramics, new energy modified materials); continuous production and automation integration greatly improve the mass production efficiency of magnesium oxide materials, reduce labor and energy consumption costs, and solve the pain points of low production capacity and large batch differences of traditional intermittent kilns.