Effective December 1st, 2026, calcium carbide (CaC₂) export packaging will officially transition to Packing Group I, replacing the long-standing Packing Group II standard. According to GB 19453, Inspection Specifications for Calcium Carbide Packaging for Dangerous Goods, and considering the hazardous properties of calcium carbide, packaging drums must meet the following testing requirements: 1.8-meter drop test 30 kPa leakproofness test Post-drop leakproofness re-test at 10 kPa These stringent testing requirements are designed to enhance packaging performance and ensure safety throughout international transportation, cargo handling, transshipment, and storage. 1. Calcium Carbide: Hazard Classification and Regulatory Information Calcium carbide, commonly known as CaC₂, has the following classification and regulatory information: UN Number: UN 1402 CAS Number: 75-20-7 Dangerous Goods Class: Class 4.3 (Substances which, in contact with water, emit flammable gases) HS Code: 2849100000 Regulatory Status: Listed in China's Catalogue of Hazardous Chemicals (2015 Edition) 2. Key Changes Under the New Packing Group…
READ MOREIn industrial gas production, raw material quality plays an important role in determining operational efficiency. For manufacturers using calcium carbide to generate acetylene gas, particle size is one of the key factors that should not be overlooked. Although calcium carbide is commonly purchased according to its chemical purity and gas yield, its particle size distribution can also influence reaction performance, feeding efficiency, and overall production stability. 1. Why Particle Size Matters Calcium carbide reacts with water to produce acetylene gas and calcium hydroxide. The reaction rate is influenced by the exposed surface area of the material. Generally, smaller calcium carbide particles have a larger surface area relative to their volume, allowing them to react more quickly with water. Larger particles, on the other hand, may react more gradually and can be suitable for certain feeding systems and operating conditions. However, the ideal particle size depends on the design of the…
READ MOREWhy gas yield is not the only indicator of calcium carbide quality Calcium carbide is mainly composed of CaC₂, but industrial calcium carbide is never made up of CaC₂ alone. During production, different raw materials, high-temperature furnace reactions, and subsequent crushing and screening processes can introduce or generate small amounts of impurities. For buyers using calcium carbide for acetylene production, these impurities can affect gas quality, residue, consumption efficiency, and overall production performance. This is why evaluating calcium carbide quality requires more than looking at the gas yield shown on a quotation. What Determines the Impurity Level of Calcium Carbide? The quality of finished calcium carbide begins with the raw materials. Lime and carbonaceous materials are the primary raw materials used in calcium carbide production. Their chemical composition directly affects the composition of the final product. Mineral components containing elements such as silicon, iron, sulfur, and phosphorus can enter the…
READ MOREWhen purchasing calcium carbide, many industrial buyers naturally focus on the price per metric ton. However, the lowest quotation does not always represent the lowest operating cost. For acetylene gas manufacturers, the actual value of calcium carbide depends on several factors, including gas yield, particle size consistency, material quality, packaging, and transportation reliability. Understanding these factors can help buyers make better purchasing decisions. 1. The Purchase Price Is Only Part of the Total Cost Two suppliers may offer calcium carbide at different prices per metric ton. At first glance, choosing the cheaper option may seem like the most economical decision. However, buyers should also consider how much acetylene gas can be generated from each ton of material. For example, if one batch produces a higher gas yield than another, the actual raw material cost per unit of acetylene may be lower, even when its purchase price is higher. This is…
READ MOREFor industrial acetylene producers, estimating calcium carbide consumption is an important part of production planning. Whether you operate an acetylene plant for welding and metal cutting or use acetylene in chemical manufacturing, knowing how much calcium carbide is required can help you plan purchases, control raw material costs, and manage inventory. But how do you calculate the required quantity? The answer mainly depends on two factors: your target acetylene output and the gas yield of the calcium carbide you use. 1. The Basic Calculation Formula Calcium carbide reacts with water to produce acetylene gas and calcium hydroxide: CaC₂ + 2H₂O → C₂H₂ + Ca(OH)₂ In commercial production, calcium carbide gas yield is usually expressed in liters of acetylene per kilogram of carbide (L/kg). You can estimate the required calcium carbide quantity using this formula: Required Calcium Carbide (kg) = Target Acetylene Output (m³) × 1,000 ÷ Gas Yield (L/kg) For…
READ MOREChina is an important producer of calcium carbide, and the location of production facilities plays a role in the industry's supply chain. For international buyers, understanding where calcium carbide is produced can provide useful context when evaluating supply sources and planning purchases. Inner Mongolia is one of China's important calcium carbide-producing regions. Its industrial base, energy resources and established chemical manufacturing sector make it an important part of the country's calcium carbide industry. 1. Why Is Inner Mongolia Important to Calcium Carbide Production? Calcium carbide production requires substantial electricity and industrial raw materials. As a result, production locations are influenced by energy availability, raw material supply, industrial infrastructure and local manufacturing conditions. Inner Mongolia has developed a substantial industrial base for energy-intensive products, including calcium carbide. The region's industrial infrastructure supports chemical manufacturing and related downstream industries. For international buyers, this regional production base is relevant because it helps explain…
READ MORE1. Introduction Calcium carbide slag is an industrial by-product mainly composed of calcium hydroxide (Ca(OH)₂). It can be used as an alternative alkaline reagent in wet flue gas desulfurization (FGD) systems to remove sulfur dioxide (SO₂) from industrial exhaust gases. Compared with conventional limestone-based desulfurization, calcium carbide slag may offer advantages in chemical reactivity and industrial waste utilization. However, its application requires proper material preparation and process control. 2. Desulfurization Principle The main active component of calcium carbide slag is calcium hydroxide, which reacts with sulfur dioxide in flue gas. The main chemical reaction is: Ca(OH)₂ + SO₂ → CaSO₃ + H₂O The resulting calcium sulfite can be further oxidized into calcium sulfate in the presence of oxygen: 2CaSO₃ + O₂ → 2CaSO₄ Under suitable operating conditions, calcium sulfate can form gypsum, which may be separated from the slurry for further treatment or qualified reuse. The actual desulfurization efficiency depends…
READ MORECalcium carbide (CaC₂) is an important industrial raw material used in acetylene production, steel desulfurization, chemical synthesis, and other industrial applications. For importers and industrial users, choosing a calcium carbide supplier is not simply about finding the lowest price. Product consistency, production capacity, delivery reliability, quality control, packaging, and communication all have a direct impact on long-term supply stability. This guide outlines the key factors buyers should consider when evaluating a calcium carbide supplier. 1. Product Quality Comes First 1.1 Gas Yield and Impurity Control For calcium carbide buyers, gas yield is one of the most important quality indicators, particularly for acetylene production. A reliable supplier should be able to provide clear specifications for gas yield, particle size, and impurity levels, together with inspection documentation for each shipment. Buyers should pay particular attention to: Gas yield Particle size consistency Impurity content Product appearance and ash Batch-to-batch consistency Inspection and testing…
READ MORECalcium carbide (CaC₂) is widely known as a raw material for acetylene production, but it also has an important role in the steel industry. One of its uses is helping remove sulfur from molten iron during steelmaking. For steel producers, sulfur control is an important part of producing steel with the required quality and performance. 1. Why Is Sulfur Removal Important? Sulfur is an impurity that can negatively affect the properties of steel, depending on its content and the steel grade being produced. Controlling sulfur levels helps steelmakers meet product specifications and maintain consistent quality. For this reason, desulfurization is an important step in many steel production processes. 2. How Does Calcium Carbide Help? Calcium carbide can act as a desulfurizing agent. Under suitable process conditions, it reacts with sulfur in molten iron and helps transfer sulfur into the slag. This process can help reduce the sulfur content before the…
READ MORECalcium carbide (CaC₂) is an important industrial raw material widely used in acetylene production, steelmaking, and other chemical applications. Due to its highly reactive nature, calcium carbide requires specialized packaging to ensure product quality, storage safety, and reliable transportation. Understanding the packaging characteristics of calcium carbide is essential for manufacturers, distributors, and international buyers. 1. Excellent Moisture Resistance One of the most important characteristics of calcium carbide packaging is its ability to prevent moisture from entering the package. Calcium carbide reacts with water to produce acetylene gas and calcium hydroxide. This reaction can generate heat and create serious safety risks. Therefore, packaging materials must provide an effective moisture barrier and remain properly sealed during storage and transportation. Common packaging solutions include moisture-resistant inner liners and tightly sealed metal drums, depending on the product specifications and applicable regulations. 2. Strong and Durable Packaging Materials Calcium carbide packaging must be strong enough…
READ MOREIntroduction The calcium carbide acetylene process is a widely used method for producing acetylene gas in industrial applications. It involves a chemical reaction between calcium carbide (CaC₂) and water, generating acetylene gas (C₂H₂) and calcium hydroxide. Chemical Reaction The reaction can be expressed as follows: CaC₂ + 2H₂O → C₂H₂ + Ca(OH)₂ + Heat This reaction releases heat and must be carried out using properly designed industrial equipment with appropriate safety controls. Main Production Steps Raw Material Preparation: Calcium carbide is inspected for quality, particle size, and moisture protection. Acetylene Generation: Calcium carbide reacts with water in a dedicated generator to produce acetylene gas. Gas Purification: The generated gas is cooled, purified, and treated according to the required quality standards. Storage and Supply: The treated gas is supplied for industrial use or transferred into approved acetylene cylinders using specialized equipment. Applications of Acetylene Acetylene is widely used in oxy-acetylene welding…
READ MORECalcium carbide is an important raw material for acetylene production. For acetylene manufacturers, choosing the right calcium carbide can help improve production efficiency and control operating costs. But what should buyers consider when evaluating calcium carbide quality? 1. Gas Yield Gas yield is an important factor for acetylene producers. It indicates how much acetylene can be generated from a certain amount of calcium carbide. A higher gas yield can mean lower raw material consumption for the same production target. Buyers should compare gas yield specifications and test results when evaluating different suppliers. 2. Particle Size Calcium carbide is available in different particle sizes to meet different production requirements. The appropriate size depends on the customer's equipment and operating process. Selecting a suitable specification can help ensure that the material works effectively in the production system. 3. Moisture Protection Calcium carbide reacts with water to produce acetylene. Therefore, keeping the product…
READ MOREInner Mongolia Kede Chemical Co., Ltd.
Phone: +86 474 4865559
WhatsApp/Wechat: +86 186 1716 1031
Email: [email protected]
Main Production Base:
Inner Mongolia Ulanqab New Materials Industrial Development Zone,
Chahar Right Wing Rear Banner, Ulanqab City, Inner Mongolia, China
Supporting Production Facility
East Area of Fluoride Industrial Park, Fengzhen City, Inner Mongolia, China
