Clark rare earth elements in the crust is 0.0153%, and common elements zinc, tin, cobalt content similar; Clark even smaller values thulium, lutetium, terbium, europium, holmium and the like, than bismuth, silver, mercury High content. Although rare earth elements are widely distributed in the earth's crust, not all rare earth-bearing deposits meet the requirements of industrial development and utilization. According to the current technical level of mineral processing and extraction, the industrial indicators for rare earth deposits are listed in the following table. Table 1 Industrial indicators of rare earth deposits Deposit type Boundary grade Industrial grade Available thickness m Stone removal thickness, m With Bastnaesite, native monazite deposits Ce 2 O 3 or R 2 O 3 0.5% Ce 2 O 3 or R 2 O 3 1% 1 to 2 2 Pegmatite and carbonate rock deposit xenotime, gadolinite etc. Y 2 O 3 or R 2 O 3 Y 2 O 3 or R 2 O 3 0.05 to 0.1% 1 to 2 2 Monazite sand mine and weathering crust deposit Monazite 100~200g∕m 3 Monazite 300~500g∕m 3 1 1 to 2 Phosphonium ore deposit and weathering crust deposit Phosphonium ore 30g∕m 3 Phosphonium ore 50~70g∕m 3 0.5 to 1 2 If the rare earth element is recovered as a companion component in the deposit, the industrial index requirements may depend on the main useful elements in the deposit. For China's unique ion-adsorbed rare earth deposits, the industrial index requirements are still to be studied and formulated.
Humic acid is a large molecular organic substance widely used in nature. It is widely used in various fields, such as agriculture, forestry, animal husbandry, petroleum, chemical, building materials, medicine and health, environmental protection and so on. Especially now, we advocate the construction of ecological agriculture, pollution-free agricultural production, green food, pollution-free and environmental protection, which make humic acid highly respected. Facts have proved that human life and survival can not be separated from humic acid.
Humic Acid
Type
Granular
Powder1
Powder2
Organic Matter (Dry Basis)
90% min.
90% min.
90% min.
Humic Acid (Dry Basis)
70% min.
75% min
70% min.
Moisture
15% max
15% max
20% max
Ash
---
10% max
10% max
Residue on Sieve (0.5 MM)
---
5% max
5% max
Size
2--5 MM
---
---
Size Rate
90% min
---
---
Specific Gravity (G/CM3)
0.65
0.75
0.75
Ignition Point
540
520
520
Packing
25 KG Kraft paper bag
Usage
Used as Humic Acid fertilizer, soil ameliorator, plant growth stimulation, fertilizer efficiency promoter.
Storage
Keep in sealed and damp proof place
The effect of humic acid is remarkable, which is good for producing green healthy food, reducing environmental pollution and reducing the cost of farmers' production. Cannot be applied on the same farmland for a long time.
Water soluble humic acid can enhance the absorption of nitrogen and potassium, promote the decomposition of phosphorus, cultivate soil fertility and promote the development of crop roots.
Humic Acid powder,Water Soluble Fulvic Acid,Organic Fertilizer Humic Acid,humic acid granular Hebei Woldi Trading Co.,LTD , https://www.woldiexport.com