 Papermaking and products made thereby |
| What is claimed is: 1. In a paper making process in which an aqueous papermaking stock containing a ... |
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| Method for preventing hardened cementitious material from deteriorating |
| What is claimed is: 1. Method for preventing cementitious material from deteriorating and ... |
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| Use of mixture of high molecular weight sulfonates as auxiliary dispersant for structured kaolins |
| Preparation of Preferred Bulked Pigments (Ser. No. 861,943). It has been determined that the shape ... |
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| Polyaluminosilicate process |
| OF THE INVENTION Preparation of the polyaluminosilicates of the invention require the initial ... |
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| Silica sols, a process for the production of silica sols and use of the sols |
| We claim: 1. A process for producing paper, comprising the steps of forming a suspension of ... |
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| Silica sols and use of the sols |
| We claim: 1. Silica sols having an S-value within the range from 15 to 40 percent comprising ... |
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| Aqueous dispersions of hydrophobic material |
| We claim: 1. Aqueous dispersion containing an anionic dispersant and a disperse phase containing a ... |
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| Process for the production of paper using silica-based sols |
| 1. A process for the production of paper which comprises: i) providing an aqueous suspension ... |
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Coal briquette and method
| Details |
Inventors: Stephens, Leonard;
Assignee:
Primary Examiner: Dees; Carl F.
Assistant Examiner:
Attorney, Agent or Firm: Fay & Sharpe
A fuel block containing concentrated combustibles is provided in a stackable, clean package which is readily ignited, and after an initial ignition burn, is consumed from the inside out with minimal smoke release. In the preferred form of the invention, ends and sides of the block have parallel faces, but the base is concave to permit an air entry passageway when the block is so positioned and burned on any generally flat surface. The top or opposite face is congruently convex to the bottom face permitting stacking of individual blocks both in storage and use. When stacked in combustion use, interior air passages or flues both horizontal and vertical, through the exterior faces of the individual block align to provide a "coking" action, as is also the case when burning of an individual block alone. The block is formed principally from coal mine particulates, coke particulates, etc., by a section defining extrusion of the plastic mix from partially dehydrated coal or coke particles most of which are not greater than about 1" nor less than about 100 mesh containing minor proportions of macro clumps of fibrous wicking material, a liquid hydrocarbon distillation fraction and methyl cellulose. The section of the extruded mass may be of any geometrical form, but the preferred form is in accordance with the accompanying drawings. |
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DETAILED DESCRIPTION There are two related aspects of the present invention, a first aspect having to do with the preferred physical form and make-up of the fuel block which permits initial burning of liberated gases with coking, and the second which makes possible extrusion of a physical-chemical admixture which conserves energy by use of coal and coal-derived particulates.
Said particulates fuel is characterized by a BTU content of in excess of about 10.
sup.
4 BTU/lb.
While the particle size range of the fuel is not appreciably larger than about one inch, but principally retained on a 100 mesh screen, there are obviously a great diversity of particle sizes present to afford a relatively dense compactable mixture of particles throughout the range as is usual in slack coal for illustration.
Such compositions make extrusions and mechanical working of the extrusion mass practicable to produce a composition whose properties and geometric design in combustion lead to a "coking" operation, greater heat of combustion of the high energy containing fuel unit, and with little smoke and hydrocarbon loss.
In other words, more controlled heat development and heat dissipation from the burning or rapid oxidation is provided.
First concerning the physical form of the invention, attention is directed to the drawings, in which: FIG.
1 is an isometric view of the completed, extruded block ; FIG.
2 is a top view of FIG.
1; FIG.
3 is a section through 3--3 of FIG.
2; FIG.
4 is an end view; FIG.
5 is a top view of an alternative slot design of FIG.
1 showing extruded vertical slots of rectangular configuration; FIG.
6 is an end view through 6--6 of FIG.
5; and FIG.
7 is a graph illustrating the mean hours burning time of standard blocks of 51/2" high, 43/4" wide and 8" long having a gross volume of 209 cubic inches plotted against the internal areas of the air passageways divided by the corrected volumes of fuel remaining in the standard block.
Referring to the drawings, the four block faces A, B, C, and D are planar, and end A and C, and sides sides B and D are parallel to one another, with the latter being rectangular
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Manufacturing Materials 
