A method for improving the safety of ignition paper preparation

Abstract

The invention discloses a method for improving safety of ignition paper preparation. The method comprises the following steps: determining the water contents of zirconium powder, barium chloride and potassium chromate, calculating the drying weights of the zirconium powder, the barium chloride and the potassium chromate, and respectively dissolving the barium chloride and the potassium chromate into distilled water so as to obtain a barium chloride solution and a potassium chromate solution; crushing loose asbestos paper into asbestos paper pulp, adding the zirconium powder, uniformly stirringto obtain a mixed solution, sequentially and slowly adding the potassium chromate solution and the barium chloride solution, transferring the mixture into a suction filtration device, standing, and drying to obtain ignition paper. According to the invention, the use safety of the zirconium powder can be effectively ensured, the barium chloride and the potassium chromate are directly used, the pre-treatment of dangerous raw materials is avoided, the contact time of operators and toxic and harmful chemical products is shortened, the production operation safety is improved, the working efficiency of an operator is improved, the energy consumption can be reduced, the preparation working time of each batch of ignition paper is reduced by 24 hours from 68 hours, the electric energy consumptionis reduced from 544 kW * h to 192 kW * h.

Description

technical field [0001] The invention belongs to the technical field of ignition materials for thermal batteries, and in particular relates to a method for improving the safety of ignition paper preparation. Background technique [0002] Thermal battery (thermal battery) is a heat-activated reserve battery. It uses molten salt as an electrolyte and uses a heat source to melt and activate a disposable reserve battery. It has high specific energy, high specific power, strong environmental adaptability, and is convenient for long-term Storage and other characteristics occupy a very important position in military power supplies. Its working principle is: the external signal detonates the electric ignition head, the electric ignition head ignites the ignition material, and the ignition material ignites each heating sheet layer by layer, and the heating sheet burns to make the electrolyte in the single battery melt into an ion conductor, the anode and the cathode The redox reactio...

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Problems solved by technology

[0004] 1. The zirconium powder used in the ignition paper has a particularly high activity. After drying, it may spontaneously ignite during use and storage, which seriously threatens the safety of the operator, and the drying process consumes energy and damages the box. When drying, special personnel are required to take care of it, which wastes man-hours;

[0005] 2. Barium chloride for ignition paper is a highly toxic chemical, which can cause digestive tract or respiratory poisoning if the human body ingests 0.2g; potassium chromate for ignition paper is a carcinogenic chemical, and drying before preparation of ignition paper and transfer may present a risk of skin contact and respiratory aspiration

However, the zirconium powder and other raw materials used in the preparation process of this type of ignition paper need to be dried and sieved. The zirconium powder with particularly high activity is prone to spontaneous combustion during drying and sieving, while the raw materials such as lead dioxide It is easy to produce dust in the process, and the lead-containing dust is easy to damage the hematopoietic, nervous, digestive system and kidney of the operator. Therefore, this method not only consumes a lot of energy and has low production efficiency in the process of preparing ignition paper, but also seriously threatens the operator. safety of personnel

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