Analysis method for determining calcium carbide in composite silicon carbide deoxidizer for steelmaking

Abstract

The invention provides an analysis method for determining calcium carbide in a composite silicon carbide deoxidizer for steelmaking, which comprises the following steps: preparing a saturated acetylene sodium chloride solution, and using the saturated acetylene sodium chloride solution as a water seal solution and a reaction solution; adding the saturated acetylene sodium chloride solution into aliquid adding burette and adjusting a zero point; weighing a certain amount of calcium carbide sample, and controlling the volume of acetylene generated by the sample to be between 10mL and 60mL; adding a certain amount of acetylene sodium chloride saturated solution into the liquid adding burette, synchronously lowering the liquid level in a leveling bottle along with the lowering of the liquid level in a gas burette to keep the liquid levels of the leveling bottle and the gas burette close, taking up a reaction bottle by wrapping the reaction bottle with a towel, uniformly shaking, and reading the liquid adding amount of the liquid adding burette; and calculating the content of calcium carbide in the sample according to an ideal gas state equation. The method overcomes the interference of silicon carbide and other forms of calcium in the sample on the determination of calcium carbide, and can accurately determine the content of calcium carbide in a composite silicon carbide deoxidizer product.

Description

technical field [0001] The invention relates to the field of steelmaking, in particular to an analysis method for measuring calcium carbide in a composite silicon carbide deoxidizer for steelmaking. Background technique [0002] In metallurgical generation, the main components of the composite silicon carbide deoxidation alloying agent are silicon carbide and calcium carbide, which are materials used for deoxidation in converter steelmaking. The calcium carbide added in it has high activity, and it can deoxidize more preferentially than silicon carbide, improve the recovery rate of carbon and silicon elements, and can reduce the use of traditional deoxidizer ferrosilicon powder and alloy powder, which are more expensive, and also have a carburizing effect, replacing some Carburizer, thereby reducing the cost of steelmaking. [0003] In the production of existing composite silicon carbide deoxidizers, manufacturers make silicon carbide and calcium carbide raw materials separ...

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Problems solved by technology

[0005] The invention provides an analysis method for determining calcium carbide in a composite silicon carbide deoxidizer for steelmaking, in order to solve the problem that the calcium carbide content in the composite silicon carbide deoxidizer for steelmaking production cannot be accurately measured

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