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A micronutrient fertiliser and method for producing same

A micronutrient and element technology, applied in the direction of organic fertilizers, fertilizer mixtures, fertilization devices, etc., can solve problems such as expensive and ineffective

Active Publication Date: 2010-08-25
AUVEX RESOURCES PTY LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, these compounds tend to leach through the soil very quickly after application, and thus lose their effectiveness quickly, and are expensive, requiring regular reapplication

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] 99 kg of leached tailings (typically consisting of 20% w / w water) were charged to a ball mill to reduce particle size to P75 15 microns. Gradually add 10 kg of water to the ball mill to keep the slurry hydrated. The slurry was then transferred to a container and stirred thoroughly. 1 kg of magnesium aluminum silicate as a dispersant was added to the slurry with thorough stirring. Then 110 g of insecticide (obtained from BASF Myacide AS) were added under constant stirring. The slurry (suspension concentrate) was then charged into 20 kg x 5 HDPE containers.

[0076] After 24 hours, the suspension concentrate was checked for percent separation in suspension expressed as % by volume of clear liquid on top of the suspension.

[0077] The suspension concentrates were then stored at room temperature for several days and re-evaluated. The results are shown in Table 1 below:

[0078] Table 1

[0079] time

[0080] The suspension concentrates were also analyzed fo...

Embodiment 2

[0082] 100 kg of leached tailings (typically consisting of 20% w / w water) were dried to a suitable limit of water content below about 10% w / w for extrusion and then mixed with 10 kg of sodium lignosulfonate (extruded Auxiliary) and 2.4 kg of Supragil MNS-425 (a surfactant) were mixed. The mixture is then extruded using a standard extruder. The extruded granules were dried so that the maximum water content was 2%.

[0083] Analyze the micronutrient content of granulated micronutrient fertilizers, including Mn, Fe, Ca, and S, using standard analytical procedures. The granulated micronutrient fertilizer was found to contain 8.0% Mn, 12.0% Fe, 15% Ca, 7.0% S and 1% K.

Embodiment 3

[0085] 100 kg of leach tailings (typically consisting of 20% w / w water) are dried to a suitable limit of water content below 2% for compaction and granulation. The obtained particulate material is screened to obtain the desired particle size of the granules, preferably 2 ± 0.3 mm. The granules were then coated with 1 gram of Biofix 220 per kg of granules. Biofix 220 was used as an anti-caking agent.

[0086] Analyze the micronutrient content of granulated micronutrient fertilizers, including Mn, Fe, Ca, and S, using standard analytical procedures. The granulated micronutrient fertilizer was found to contain 9.5% Mn, 13% Fe, 16.5% Ca, 7.5% S and 1% K.

[0087] It is contemplated that the micronutrient fertilizer of the present invention has particular application as an in-furrow micronutrient fertilizer. More particularly, the microfertilizers of the present invention are expected to increase plant growth, stimulate plant growth, plant vigor and / or affect crop yield compared...

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Abstract

A micronutrient fertiliser comprising leach tailings from a sulphur dioxide leach process for the recovery of manganese or manganese sulphate products and a method for the production of such a micronutrient fertiliser, the method comprising the step of saturating an aqueous phase with the tailing from a leach process directed to the recovery of manganese or a manganese sulphate product.

Description

technical field [0001] The invention relates to a micronutrient fertilizer and a preparation method thereof. More particularly, said micronutrient fertilizer comprises and is at least partially produced from manganese leached tailings obtained from a sulfur dioxide leaching process. Background technique [0002] In most mineral processing processes, waste streams are generated as a result of the removal or recovery of target metals from feed streams. Typically this waste stream is either recycled to the feed stream or processed to recover additional elements of commercial value before it is stored or disposed of. Storing or removing waste such as tailings has a significant impact on mineral processing operations. Therefore, the use of such tailings for any useful purpose has the potential to add significant added value to any such operation. [0003] An example of the above is the applicant's sulfur dioxide leaching of manganese oxide as described in International Patent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05D9/00C22B3/04C05F11/00C22B47/00C05G3/60
CPCC05D9/02C22B7/006C22B47/0081Y02P10/20
Inventor Y·夏尔马
Owner AUVEX RESOURCES PTY LTD