Lead drying oil. simple recipes

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FACTORY TECHNOLOGIES AT HOME - SIMPLE RECIPES
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Lead drying oil. Simple recipes and tips

Factory technologies - simple recipes

Directory / Factory technology at home - simple recipes

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Here are the recipes lead drying oil.

Linseed oil is poured into the cauldron so that it occupies three-quarters of the volume, and heated until foam forms. The foam is constantly removed using a thick sieve, and the scooped oil is drained back into the boiler.

When foam no longer forms and the surface of the oil appears to be inactive and smooth, add in small portions 2-3 kg of well-dried and finely ground lead litharge for every 10 kg of oil. The temperature is raised so that there is a strong release of water vapor. From time to time, in order to avoid the deposition of lead litharge, the oil is stirred and cooking is continued for approximately 3-4 hours.

When the oil has already become so sticky that threads form around the stirrer, intensify the fire and vigorously stir the liquid so that it does not catch fire and so that the heat is evenly distributed. When the release of steam subsides and the oil becomes thick enough, the liquid is left to cool completely in a closed cauldron, in which usually most of the undissolved lead litharge settles.

Drying oil is drained from the sediment and filtered through a canvas, then it is poured into barrels. Instead of lead litharge, red lead or a mixture of lead litharge with red lead is used for the preparation of drying oil.

When using minium, the formation of drying oil is faster and more perfect than with lead litharge. The disadvantage of lead drying oils is their dark color and ability to darken over time.

Mix 300 g of lead litharge, 300 g of red lead and 450 g of lead sugar. All this mixture is poured into a bag of dense canvas and immersed in a cauldron filled with 30 liters of linseed oil and 30 liters of water. Heat up until all the water has evaporated. Hot drying oil is filtered through a felt filter.

Author: Korolev V.A.

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