Lead alloy deslagging agent and application method thereof

Abstract

The invention discloses a lead alloy deslagging agent which is prepared by uniformly mixing bamboo charcoal powder, sodium hydroxide, sodium nitrate, sulfur powder, pulverized coal and pine wood powder by a mechanical grinding and stirring way. The deslagging agent is prepared from the following components in percent by weight: 20-40% of bamboo charcoal powder, 5% of sodium hydroxide, 5% of sodiumnitrate, 3% of sulfur powder, 20-40% of pulverized coal and 20-40% of pine wood powder. When a lead alloy for a storage battery grid is prepared, the prepared deslagging agent is added into electrolytic lead to be reacted with molten lead of the electrolytic lead, so that lead slag is separated and impurities are removed. By preparing the alloy from the deslagging agent, the lead slag rate can bereduced by over 50%, and the alloy is low in impurity content and good in flowability of molten lead. The prepared lead is used for pouring the grid, and the grid is formed well, and is high in rateof finished products and high in corrosion resistance.

Description

technical field [0001] The invention relates to the technical field of electrochemistry, in particular to a lead alloy slag remover. Background technique [0002] The grids for lead-acid batteries are mainly prepared by gravity casting with lead-based alloys. The quality of the lead-based alloy not only affects the forming condition of the grid, casting efficiency, and yield, but also affects the corrosion resistance of the grid, and ultimately affects the life of the battery. In recent years, with the continuous strengthening of the country's control over the recycling and reuse of waste batteries and the continuous expansion of the battery recycling industry, more than 40% of the lead currently on the market is made from recycling and smelting waste batteries. At the same time, due to the recycling and smelting technology of various manufacturers The levels are uneven and the types of lead recovered are different, resulting in fluctuations in the quality of lead. The lead...

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Problems solved by technology

The quality of the lead-based alloy not only affects the forming condition, casting efficiency and yield of the grid, but also affects the corrosion resistance of the grid, and ultimately affects the life of the battery

In recent years, with the continuous strengthening of the country's control over the recycling and reuse of waste batteries and the continuous expansion of the battery recycling industry, more than 40% of the lead currently on the market is made from recycling and smelting waste batteries. At the same time, due to the recycling and smelting technology of various manufacturers The levels are uneven and the types of lead recovered are different, resulting in fluctuations in the quality of lead. The lead slag rate and yield of different batches of lead are not stable in the process of alloy preparation and grid casting, which affects product quality and cost.

Although there are slag remover products on the market, which have a certain effect on reducing the rate of lead slag, they have little effect on improving the quality of alloy products, and the fluidity of lead liquid is average.