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D D Mickelson - Krummrich
September 27* 1971
SOLUBLE GRADE KC1 TEST
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J. C. Hume
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Q. C. Hudson J. F. Thompson - G.O. D. L. Weber
Two of the items needed to proceed with planning and implemen tation of another soluble (Ag-grade) KC1 test are the quality of the KC1 and the savings involved. These'items are summarized at the end of this memo.
Since we are talking in terms of $72,000+ per year in savings,
it is imperative to proceed as rapidly as possible toward setting
up a test. Further incentive has been provided by Sil Lutkewitte's
discussions of September 17, 1971 with the people at Hooker in
Niagara Falls, N.Y. He found out that they are using a mixture .
of soluble grade and chem grade KC1 to feed their Udhe cells.
This is the first specific confirmation of them running soluble
grade for anything other than a test. They report hydrogen
increases of less than 0.5% in their cells as a result of using 1
this mix (ratios are unknown). Their stated goal is 100$ soluble
grade, but they haven't achieved it as yet.
.
Several questions need to be resolved before we can go full time to a soluble/chem KC1 mix:
1. . Effect of high Na+ on KOH for TKPP. Per J. C. Weber and
Carondelet plant we can go as high as 2000 ppm Na+ before we <5. get into trouble. They prefer 1000 ppm Na+.
2. Effect of high Na+ on KOH for ACL-59* Above.5000 ppm Na+
in the total process stream, crystal growth problems occur
(slime, fines). A usage of KOH with 1000 ppm Na+ would have
- to be tested,^ but Is probably acceptable. Above.this level,
trouble may occur. (Note: Significant amounts of Na+ are
brought into the process as Na3 CYA feed stock.)
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5* Effect of 'high 'Na+ on KOH for IDV users (NItro, Queeny). Will you get the input here?
on sheets*,
on p.C.A. soluble KC1, there is no significant difference in
bromine levels.
jdmJ
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DSW 296774 STLCOPCB4066687
1
J. C. Hume SOLUBLE GRADE KC1 TEST
Page 2
9/27/71 WGK
5. Effect of high Na+ on KOH for customer sales. This will
have to be determined by Marketing. I will handle the
contacts here. -
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6. Effect of soluble KC1 on cell house (DSA, steel bottom) operations. Only a test will answer these questions. When can it be scheduled?
bp Atts. (2)
D. D. Mickelson
4
STLCOPCB4066688
I
table I COST SAVINGS SUMMARY (Per R. F Neunuebel)
A. KCl Purchases = 45,500 T/Year (1972 Budget)
B. Chemical Grade KCl Price = 30.00/? F.O.B. (l/l/T2)
Ag-Grade KCl*
= 23.71A F.O.B.
Price Differential
= $ 6.29/?
-
Weighted seasonal price differentials for 7/71 to 6/72 computes to $23*47/ton F.O.B. for Ag-grade KCl. This is
corrected by 99*95/98.94 ratio to put on same dry KCl basis as chem grade. .
C. PCA says they will ship KCl in a 2 compartment chemical grade/l compartment soluble grade car (33$ blend). Previous testing at WGK was 25$ blend.
C-D. Potential Savings/Year: ' 25$ Blend -- 11,400 T x $6. 29A = $71,700/Yr .
33$ Blend - 15,300 T x $6. 29A = $96,200/Yr.
STLCOPCB4066689
VJ--- -1m;
. TABLE II . KC1 QUALITY SUMMARY
(per Potash Co. of America)
TYPICAL ANALYSIS________
CHEM. GRADE
SOLUBLE GRADE
Chemical Composition ($)
*KC1, dry basis K20 Moisture, H20
99.95#
63.14 0.02&
98.9^ 62.5
0.05#
Water Solubles (ppm)
- ' v: . - -
* Sodium Sulfate Bromide
Calcium * Magnesium
Iron Copper
*Lead Nickel Chromium Molybdenum Vanadium
- Fluoride Arsenic
Na
so*-----------
Br Ca Mg
Fe Cu Pb -- N1 ' Cr : Mo V F As
100 t 50
10+5 295 50
4
2 0
.02
.05 .02
.005 .006
.002 1 0
.
4180 t 3000
55 * 35 - 240 40
a 4
125*100
,05 .10
5 .03 .008 . 006 .007 1 0
Water Insolubles CPPm.)
N' . -- '
' Total Inorganic
Silica
Si02
Hydrogen Oxides R203
- -. \
50 10
15
55 15
20
Acid Insolubles (ppm)
10 15
Sizing and bulk density are comparable for the chem and soluble grades of KC1.
Areas of significant difference worth noting -- principally
Na and Mg.
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DSW 296777
STLCOPCB4066690