A bi product of the steelworks industry, Ag Slag contains Calcium & Phosphate in a slow release form as well as other trace elements.
This product is suitable for acidic soils.
At a maximum recommended rate of 1.5 tonnes/acre, it provides in the region of 38 units of phosphate along with trace elements, essential for healthy crops and animals.
Typical Analysis of Steel Works Slag
Steel works slag varies slightly, but typically contains the following elements. Also recorded are commonly found maximum contents.
|
Typically
|
Maximum
|
Maximum Units per 1 tonne
|
|
TNV ….. 58
|
68
|
TNV68
|
|
CaCO3 ….. 72%
|
80.5%
|
1610
|
|
AL203 ….. 1.5%
|
3.24%
|
65
|
|
B ….. 700ppm
|
853ppm
|
1.7
|
|
Ca0 ….. 49.6%
|
55.5%
|
1110
|
|
CL ….. 1.75%
|
2.04%
|
40.8
|
|
Fe0 ….. 15.2%
|
19.5%
|
390
|
|
K20 ….. 0.03%
|
0.09%
|
1.8
|
|
Mg0 ….. 7.9%
|
10.00%
|
200
|
|
Mn0 ….. 3.6%
|
4.00%
|
80
|
|
P205 ….. 1.8%
|
2.48%
|
49.6
|
|
Zn ….. 126ppm
|
800ppm
|
1.0
|
|
Cu ….. 137ppm
|
154ppm
|
0.31
|
|
Mo ….. 45ppm
|
64ppm
|
0.13
|
|
Co ….. 4ppm
|
5ppm
|
0.01
|
|
So3 ….. 0.3%
|
0.35%
|
7.0
|
*These samples were analysed by various laboratories from steel works slag from South Wales.