Heyl & Patterson Blog

Magnesium Oxide Production Through Calcining

Posted by H&P Blog on Wed, Nov 11, 2015 @ 09:31 AM

Magnesium oxide, commonly called magnesia, is an inorganic compound that occurs naturally in the metamorphic rock known as periclase, which can be found in some forms of marble.  Its name comes from the Magnesia region of Asia Minor, which gave rise to the word "magnet" because of the local stone's magnetic properties.  Magnesium oxide is a particularly pure white mineral that is odorless and soluble in water.  Known by the chemical formula MgO, it is formed from bonding magnesium ions in a lattice with oxygen, which gives it a crystalline structure.  It is typically processed into a fine, white powder.

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Tags: process equipment, calciners, powder & bulk solids, mineral processing

Understanding Kaolin Processing, Mining and Uses

Posted by H&P Blog on Wed, Nov 04, 2015 @ 08:51 AM

Kaolin was first discovered in the hills of southeastern China, and its name translates as "high ridge" as a reference to the area of the country where it is mined.  It was first mined on a large scale during the 7th century to manufacture porcelain, and still produces large quantities of the world's supply, giving it an alternate name of China clay.  Although China has an abundance of this white powdery clay material, its quality in that region of the world is lacking.  Kaolin is found around the world, but high-quality deposits that boast exceptional whiteness, viscosity and other favorable characteristics are rare.  The United Kingdom, Brazil and southeast United States each have formations of remarkable quality.

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Tags: industrial dryers, rotary dryers, calciners, powder & bulk solids, mineral processing

Processing of Roofing Granules for Use on Asphalt Shingles

Posted by H&P Blog on Wed, Sep 02, 2015 @ 09:00 AM

Now that September is here, autumn won't be far behind.  The fall season is often associated with harvests, the start of a new school year, colder weather and it is considered to be the best time to re-shingle a roof.  Weather conditions are optimal, and the shingles have time to form an airtight barrier prior to the first snowfall of winter.  Asphalt shingles are by far the most popular roofing option in the United States.  They are affordable, durable and need minimal maintenance, so it is not difficult to understand why they are the preferred roofing material by roofers and homeowners alike.  Many types of asphalt shingles are expected to have a lifespan of about 20-25 years.

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Tags: calciners, powder & bulk solids, mineral processing

Yellowcake Processing to Remove Impurities From Uranium

Posted by H&P Blog on Wed, Aug 05, 2015 @ 10:06 AM

Yellowcake is a mixture of uranium oxide that is produced from the milling of uranium ore.  It is an intermediate step in the processing of uranium after it has been mined, but before fuel fabrication takes place.  The material is characterized by small, coarse granules with a pungent odor.  Even though it is radioactive, it is safe when stored and handled properly.  This yellow cake is typically created from ore at the mine site through a leaching process, and is what remains after drying and filtering, before being stored in drums to be transported to an enrichment plant.

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Tags: process equipment, calciners, powder & bulk solids, mineral processing

Pugmill Mixers and Factors that Impact Their Performance

Posted by H&P Blog on Wed, Mar 04, 2015 @ 09:20 AM

The best option when searching for a pug mill mixer may be to consider six factors: agitation, drive assembly, inlet, discharge, cost and maintenance. When analyzing these options, take into account the ideal design features and decide which variables upon which it may be necessary to compromise. Finding a pug mill mixer that exactly fits an entire list of criteria may be impossible, because even if a custom solution is an option, then the cost could end up breaking the budget.

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Tags: process equipment, powder & bulk solids, pug mill mixers

Turning Powders, Dusts and Sludges Into Easy-To-Handle Granules

Posted by H&P Blog on Wed, Feb 25, 2015 @ 09:00 AM

Agglomeration and granulation are two common terms used in process industries, and they are actually synonyms.  Granulation is the process of forming a powder, dust or sludge substance into multiparticle entities, and the resulting granules can vary in size from either 0.2 to 4 mm depending on their specific use.  Agglomeration is also known as particle size enlargement, and is a general wide-spectrum term for granulation.  These technologies are excellent tools to modify mass product properties for further and easier processing.

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Tags: agglomerator/granulators, fluid bed dryers, powder & bulk solids

Thermal Processing Equipment Benefits a Gypsum Operation

Posted by H&P Blog on Wed, Jan 28, 2015 @ 08:30 AM

Gypsum is a naturally occurring hydrated salt compound of soft calcium sulfate, and its use depends on the industry in which it is used.  It was formed millions of years ago as prehistoric sea beds evaporated, and can be found in large, thick beds or smaller, thinner ones.  Today, gypsum is typically mined in open pit quarries and processed similar to other such operations.  Through thermal processing, or pyro processing, it is broken down and refined into more recognizeable forms.  It is something that most people probably have not heard of but almost everyone uses, and on a daily basis.

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Tags: process equipment, calciners, powder & bulk solids, mineral processing

Potash Drying is Vital to the Fertilizer Industry

Posted by H&P Blog on Wed, Oct 29, 2014 @ 09:42 AM

Potash is a mined salt that contains potassium as a primary ingredient.  Its formation is the result of the evaporation of bodies of water over hundreds of thousands of years, leaving potassium in their wake.  The substance was then buried deep in soil hundreds of feet under the ground, and was originally discovered during the oil-drilling process in Saskatchewan, where the largest potash reserves are located to this day.

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Tags: industrial dryers, process equipment, fertilizer, powder & bulk solids, dewatering, mineral processing

Materials and Applications for Rotary Calciners

Posted by H&P Blog on Wed, Aug 27, 2014 @ 09:45 AM

Calcination is loosely defined as thermal processing done at elevated temperatures to change the properties of a given material.  Calcining is often applied to ores and other solid materials to bring about a thermal decomposition, phase transition or removal of a volatile fraction.  The calcination process normally takes place at temperatures below the melting point of the material being calcined.

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Tags: torrefaction, process equipment, calciners, powder & bulk solids

Heyl & Patterson to Exhibit at the PTXi Powder Show

Posted by H&P Blog on Wed, Apr 25, 2012 @ 09:15 AM

A powder is a dry, bulk solid composed of a large number of very fine particles that flow freely when shaken or tilted.  These substances are a type of granular material that have finer grain sizes, and therefore have a greater tendency to clump when flowing, as opposed to coarser materials that do not form clumps except when wet.  Due to their small particle size, powders are more cohesive and more easily suspended in gases.

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Tags: Heyl & Patterson, trade shows & conferences, industrial dryers, rotary dryers, process equipment, fluid bed dryers, calciners, powder & bulk solids