Zirconium washed and dried frit as per specification

Supply of Zirconium washed and dried frit (ZWDF) with Zircon sand issued as free issue material (FIM). Technical specifications are given below: I) Chemical analysis: A) Soluble ZrO2 +HfO2: 60% w/w (min.) (in 60% HNO3 at 80-85 deg C for 03 hours) B) Soluble SiO2: 3% w/w max. (in 60% HNO3 at 80-85 deg C for 03 hours) C) Total insoluble including unreacted sand: 15%w/w. (max) D) Iron content: 0.45% w/w max (as Fe) E) Sodium content: 4 % w/w (max) F) Carbonate content shall be less than 1.8% w/w. G) Titanium(Ti) content : 0.15% w/w (max.) when sourced from M/s IREL, Manavalakurichi Unit (Tamilnadu) & 0.23% w/w (max.) when sourced from M/s IREL, Chavara Unit (Kerala). Considering the cross-contamination while change-over from processing of Q-Grade to MK-Grade zircon sand, material will qualify w.r.t Ti upto 0.23% (Max) for a maximum of two lots supplied immediately after the change-over. H) Moisture content : 10% w/w max.(weight loss at 110 deg C in 03 hours) Note: The above solubility analysis will be determined when 50 gm of washed and dried frit is dissolved in 200 ml of 60% HNO3 at 80-85 deg C for 03 hours. II) Pro-rata criteria: A) Price quoted by the party shall be for 60% soluble ZrO2 + HfO2 content in ZWDF. B) The soluble ZrO2 + HfO2 content in ZWDF will qualify for pro-rata payment (both ways from 60% w/w ) on the basic price of the soluble ZrO2 + HfO2 content. C) In case the insolubles content exceeds 15%, material will be considered for acceptance subject to deduction of 1% ofsoluble ZrO2 + HfO2 content for every 2% increase of insolubles. D) Incase the insolubles content is less than 15%, material will qualify for payment of additional 0.5% of the soluble ZrO2 + HfO2 content for every 2% decrease of insolubles. III) Additional criteria: A) ZWDF supplies with soluble ZrO2 + HfO2 content less than 55% would be rejected forthwith on the basis of NFC/ZC laboratory analysis. B) ZWDF will be rejected if Gel formation is observed when digested with 60% Nitric acid in the ratio of 1:4 w/v at 80-85 deg C for 3 hours and the slurry is not settling into two distinct layers after 2 hours of settling. C) ZWDF supplies with insolubles more than 19% would be rejected forthwith on the basis of NFC/ZC laboratory analysis. E) ZWDF will be rejected if Soluble SiO2 content is more than 3% w/w. F) ZWDF will be rejected if Iron (Fe) content is more than 0.45% w/w. G) ZWDF will be rejected if Sodium content is more than 4 % w/w. H) ZWDF will be rejected if Carbonate content is equal to (or) more than 1.8 % w/w. I) ZWDF will be rejected if Titanium content is more than 0.15% w/w, when sourced from M/s IREL, Manavalakurichi Unit (Tamilnadu) & more than 0.23% w/w, when sourced from M/s IREL, Chavara Unit (Kerala) after considering applicable change-over limitations as indicated under I(G) above. J) ZWDF will be rejected if Moisture content is more than 10%w/w. IV) Analysis results of NFC/ZC control laboratory is final. V) Packing : Moisture proof packing in 50 kg HDPE hessian lined bags and sealed /stitched with supplier's name printed on each bag.

Sri Lakshmi Chemicals (BID ID -3317685)

C S ZIRCON PRODUCTS PRIVATE LIMITED (BID ID -3316535)

Fusion Chemicals and Products Private Limited (BID ID -3308230)