Technical-grade magnesium hydroxide is primarily shipped in two consistencies: powder and slurry. While the solid form, MgOH(2) powder, is the more common shipping selection for a variety of industrial applications, MgOH(2) slurry, the liquid form, is a popular choice, especially for wastewater treatment as a safe alternative to caustic soda or lime.
A number of considerations should be carefully weighed in selecting a final shipping format for technical-grade magnesium hydroxide.
When to Order Powdered, Dry Magnesium Hydroxide
1. Long Distances/High Volume
The added weight of water in a slurry mixture increases freight costs when shipped cross-country or internationally. In bulk shipments, technical grade powder is often preferred, allowing for nearly double the content of magnesium hydroxide at the same volume.
If the application specification calls for slurry, mixing equipment can be provided.
2. Low Volume
Regardless of distance, technical-grade dry material can be aptly mixed in a drum with the added benefit of controlled settling for small-batch shipping and receiving.
3. Electrical Power Constraints On-Site
Powdered magnesium hydroxide does not require constant agitation as compared to the liquid slurry, reducing the need for high-energy machinery upon arrival.
4. Concentration Variety
In industrial applications where a myriad of magnesium hydroxide concentration ratios are needed, dry powder is the preferred format due to superior accuracy and greater ease of material segregation due to slurry’s tendency to settle over time.
5. Flexible Shipping Methods
In general, powdered Mg(OH)2 can be shipped via more versatile and flexible transport options, including:
Bulk pneumatic trucking
Standardized 50lb bags
Reefer truck or van
LTL or partial load
Railway or train
When to Order Liquid, Magnesium Hydroxide Slurry
Technical-grade Mg(OH)2 slurry is ready to use, eliminating any time delay between arrival and application.
2. Limited Equipment
If the receiving facility does not have the industrial equipment necessary to mix Mg(OH)2 dry powder with the appropriate amount of water to create technical-grade slurry, professionally pre-mixed slurry is an ideal alternative.
3. Reduced Manpower
Industrial locations vary in their staffing. Ready-made liquid slurry is optimal for sites with fewer employees or reduced manpower.
4. Established Infrastructure
Technical-grade slurry requires constant agitation. Facilities should have correct, operational in-house equipment to prevent settling. If needed, Garrison Minerals has the expertise and manufacturing capabilities to assist with appropriate storage and dosing equipment to optimize the product and application specifications.
5. Short Distances/Lower Volume
With the added volume and weight, liquid slurry shipments are recommended for receiving organizations within a 250-mile radius to a distribution site. This typically amounts to one-day freight trip.
Even the smallest wastewater treatment plant needs pH adjustment and added alkalinity derived from magnesium hydroxide, and whether shipping a small volume to a rural plant or to a large plant in a densely populated urban area, logistics should be considered.
6. Shipping Options
Liquid slurry is most often shipped by:
Optimizing Freight Costs
All technical-grade magnesium hydroxide products are application-dependent. Despite shipping conditions, dry or liquid form may be necessary for specific end-product. For example, flame retardants typically require dry powder. Alternatively, as noted above, wastewater applications often necessitate slurry.
Garrison Minerals will work with you and your team to determine the best material and most efficient shipping method for your circumstances.
Contact us today for expert recommendations and a detailed freight estimate.