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US 12,709,542 B2Granted
Free flowing sodium nitrite and method of production
AssigneeDeepak Nitrite Limited
InventorsSanjay Kumar Suman, Jignesh R Desai, Sanjay Bhalekar
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AssigneeDeepak Nitrite Limited
InventorsSanjay Kumar Suman, Jignesh R Desai, Sanjay Bhalekar
Estimating the term…
The present disclosure describes about a free flowing sodium nitrite and a method (200) of obtaining the free flowing for sodium nitrite. The method (200) may comprise various steps such as optimizing (202) the concentration of SNI, heating (206) of sodium nitrite slurry at 50 to 600 rpm, gradually cooling (208) the heated mass below 45° C., filtering (210) the wet mass, drying a filtered mass (212), and sieving (214) the dried mass to obtain the free flowing sodium nitrite comprising a spherical or oval shape granules. The spherical or oval shaped granules of SNI obtained has a moisture content of less than 0.15%, mesh size of more than 60 BSS in an amount 60-80% of the total content the particle size of at least 0.25 mm in an amount 60-80% of the total content, angle of repose between 25° to 37° and Hausner ratio of 1.03 to 1.17.
A free flowing sodium nitrite (SNI), comprising a spherical or oval shape granules of sodium nitrite having a mesh size of more than 60 BSS in an amount 60-80% of the total content and a mesh size of less than 60 BSS in an amount 20-40% of the total content, wherein a moisture content of free flowing sodium nitrite is less than 0.15%, wherein the free flowing SNI is coated with at least one anti-caking agent to obtain a coated free flowing SNI, wherein angle of repose obtained for the free flowing sodium nitrite, coated with the at least one anti-caking agent, is between 25° to 30°, and wherein ratio of untapped bulk density and tapped bulk density of the free flowing sodium nitrite, coated with the at least one anti-caking agent, is within a range of 1.03 to 1.17.
Dependencies are inferred from the claim text.