Patent ID: 7642010

Claim:
A method of making a magnetically treated low concentration sodium-containing silicate solution for a lead-acid storage battery, comprising: 1) preparing 5˜15 weight units of a silica gel containing 40˜60 wt % SiO 2 ; 2) adding 15˜25 weight units of water to the silica gel and stirring the mixture at the same time, until the concentration is 0.65˜0.85 0 Be′ measured using a Baume′ densimeter; 3) adding inorganic acid to the solution of step 2) until a pH value is 1-4 to obtain a silicate mixture; 4) exposing the silicate mixture obtained in step 3) to a magnetic field of 1000-6000 Gauss for 5-10 minutes to obtain a magnetized mixture; and 5) stirring the magnetized mixture obtained in step 4) until the viscosity of the magnetized mixture is less than 0.02 poise.