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Characteristics of calcium silicide CaSi2 powder

According to the latest quarterly analysis of the natural gas market released by the International Energy Agency, global natural gas consumption will decline slightly this year and increase slowly in the following years because of soaring prices and the possibility of further reductions in Russian natural gas supplies. Global natural gas use this year is expected to be 0.5% lower than the 2021 level, and global natural gas demand is expected to increase by only 140 billion cubic meters over 2021 by 2025, the report said. The annual growth in 2021 will reach 175 billion cubic meters.

At the same time, the IEA's forecast for natural gas demand growth by 2024 was 60 per cent lower than its previous forecast, mainly due to "a weak economy and a smaller energy shift from coal or oil to natural gas", the report said.

It is worth noting that the South Korean Ministry of Industry, Trade and Resources announced on the same day that it plans to increase the proportion of nuclear power in South Korea's national energy structure to more than 30% by 2030. The proportion is 27.4% in 2021. The department also announced the resumption of the construction of two nuclear reactors. According to reports, after taking office, South Korean President Yoon Sik-Yue rejected the previous government's plan to phase out nuclear power and promised to increase investment in the nuclear power industry, so as to regain South Korea's status as a major exporter of safe nuclear reactors.

In addition, the supply and prices of many international bulk calcium silicide, CaSi2 overview, calcium silicide application, CaSi2 supplier, calcium silicide price are still very uncertain.

Calcium Silicide Overview

Calcium silicide CaSi2 is a gray-white or dark gray to black solid substance with a melting point of 1033°C. Insoluble in water, it decomposes in water to generate hydrogen and calcium hydroxide. Decomposes in hot water. Calcium silicide is flammable and can spontaneously ignite in the air. Calcium silicide can be formed by the reaction of metallic calcium and silicon in an inert atmosphere at 850°C. It is a white or dark grey to black solid with a melting point between 700 and 935°C.

Characteristics of calcium silicide CaSi2 powder

Calcium silicide CaSi2 powder (CAS 12013-56-8) has high melting point, high corrosion resistance, high oxidation resistance, good electrical conductivity, high temperature ductility, and the intermediate phase of binary alloy system.

How is calcium silicide produced?

1. Elemental silicon and calcium are directly smelted to obtain calcium silicide with higher purity. But the operation has to be done in two steps.

Step 1: Mix the pure calcium chips and pure silicon powder evenly, put them into a hard biscuit porcelain boat, quickly put the porcelain boat into the quartz reaction tube, and pour CO2 into the tube. The porcelain boat has been heated to 1000°C. In just a few seconds, the mixture melted and the reaction proceeded vigorously. Take out the porcelain boat, and the generated CaSi immediately solidifies and smashes. CaSi is a porous block with lead gray and metallic luster.

The second step: Mix the CaSi with the calculated amount of Si powder evenly, put it into a nickel boat, and heat it to 1000 ℃ in the H2 flow. Heating was required for 15 hours due to the slow progress of the last stage of the reaction.

2. Mix pure CaO and silicon with appropriate fluxes CaF2 and CaCl2, and melt them at 1400 °C to obtain CaSi2, in which a large amount of silicon is incorporated.

Application of calcium silicide CaSi2 powder

Calcium silicide is used in the manufacture of special metal alloys, for example for phosphorus removal and as a deoxidizer.

In the pyrotechnic industry, it is used as a fuel to create special mixtures such as smoke, flash components and impact caps.

Calcium silicide is used in the manufacture of certain initiators, pyrotechnics and smoke components.

Silicon calcium alloy is mainly used as desulfurizer and deoxidizer in iron and steel industry and foundry industry.

Calcium silicide has been found to be extremely corrosive to all metals, including refractory metals.

Calcium intermetallic silicide (CaSi 2 ) is formed by simultaneously reducing calcium oxide and dissolved carbon dioxide in the electrolyte and silica particles.

Silicon-based fuels are used in certain time-lapse mixtures, such as controlled blast bolts, grenades, and infrared decoys. Flue gas components often contain hexachloroethane. During combustion, they produce silicon tetrachloride, like titanium tetrachloride used in smoke filters, which reacts with moisture in the air to form a dense white mist. Some mixtures use gum arabic to inhibit the breakdown of calcium silicide.

Calcium silicide CaSi2 powder price

The price of calcium silicide (CaSi2) powder will vary randomly with factors such as the production cost, transportation cost, international situation, exchange rate, and market supply and demand of calcium silicide (CaSi2) powder. Tanki New Materials Co., Ltd. aims to help industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full range of customized services. If you are looking for calcium silicide CaSi2 powder, please feel free to send an inquiry to get the latest price of calcium silicide CaSi2 powder.

Calcium silicide suppliers

As a global cobalt silicide CoSi2 powder supplier, Tanki New Materials Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced and engineered materials. The company has successfully developed a series of powder materials (molybdenum disilicide, titanium silicide, calcium silicide, iron boride), high-purity targets, functional ceramics and structural devices, and provides OEM services.

Technical Parameter of Calcium Silicide CaSi2 Powder:
Product NameMFPurityParticle SizeMelting PointDensityColor
calcium silicideCaSi299%5-10um1020℃2.5 g/cm3silver black
Chemical Composition of Calcium Silicide CaSi2 Powder:
CaSi2CaSiCPFeS
>99%57.12%41.50%0.20%0.02%0.29%0.02%


Commodities such as crude oil, wheat, cotton, and nickel have rallied since Russia's "special military operations" began in late February. On the last trading day of this quarter, commodities were on track for their biggest gain since 1990. For this reason, it is expected that the price of the calcium silicide, CaSi2 overview, calcium silicide application, CaSi2 supplier, calcium silicide price will continue to increase.

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