Concentrated heavy duty particulate laundry detergent

A free flowing particulate heavy duty laundry detergent of bulk density of at least 0.6 g/cc. and particle sizes in the range of 4 to 140 mesh which comprises substantially globular sodium tripolyphosphate particles, zeolite particles and nonionic detergent,

• with the tripolyphosphate particles being of sizes in the 8 to 140 mesh range, U.S. Standard Sieve Series and containing about 5-15% water and about 10-20% of sodium silicate having an Na.sub.2 0:SiO.sub.2 ratio in the range of about 1:1.6 to about 3.0,
• wherein said nonionic detergent is in the interior and coats the surfaces of the tripolyphosphate particles, said nonionic detergent coat adhering zeolite particles to the tripolyphosphate particles so as to produce a first layer of non-ionic detergent and zeolite particles;
• and wherein said nonionic detergent is also present as a second coating on the surface of said first layer and zeolite particles are also adhered to said second nonionic detergent coating to render said product free flowing;
• the zeolite particles of the first and second layers being of ultimate particle diameters in the range of 0.01 to 20 microns, said zeolite being a crystalline, amorphous or mixed crystalline and amorphous zeolite, the exchange rate and capacity of said zeolite being such that when about 375 ppm of said zeolite on an anhydrous basis is placed in water at about 45.degree. C. containing about 40 ppm of dissolved calcium ion while vigorously stirring the dissolved calcium ion content is reduced to below about 8 ppm in about 5 minutes,
• and said nonionic detergent being a higher fatty alcohol polyethylene oxide condensate wherein the higher fatty alcohol is of about 10 to 18 carbons and the polyethylene oxide is of about 3 to 15 moles of ethylene oxide per mole of higher fatty alcohol.