ANALYSIS OF AVERAGE BOILER SCALE.

Parts per 100 parts

of deposit.

Silica .042 parts.

Oxides of iron and aluminium .044 „

Carbonate of lime 30.780 „

Carbonate of magnesia 51.733 „

Sulphate of soda Trace „

Chloride of sodium Trace „

Carbonate of soda 9.341 „

Organic matter 8.060 „

--------------

Total solids 100. Parts

The percentage only of each ingredient the scale is composed of is

given, as it cannot be told how much water was evaporated to leave this

amount of solid matter.

Maxims and Instructions for the Boiler Room Useful to Engineers, Firemen & Mechanics; Relating to Steam Generators, Pumps, Appliances, Steam Heating, Practical Plumbing, etc. · 第 146 / 328 题