Free flowing sodium nitrite and method of production
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.
1 . 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.
2 . The free flowing sodium nitrite (SNI) as claimed in claim 1 , wherein the spherical or oval granules of sodium nitrite having a mesh size of more than 60 BSS in an amount 60-80% of the total content possess a particle size of at least 0.25 mm.
3 . The free flowing SNI as claimed claim 1 , wherein the untapped bulk density and tapped bulk density of the free flowing sodium nitrite, coated with the at least one anti-caking agent, is within the range of 0.9-1.14 g/cm3 and 0.9-1.3 g/cm3 respectively.