US3528915A

US3528915A - Titaniferous biotite lubricant

Info

Publication number: US3528915A
Application number: US803414*A
Authority: US
Inventors: Warren L Taylor
Original assignee: Titan Products Co
Current assignee: Titan Products Co
Priority date: 1969-02-28
Filing date: 1969-02-28
Publication date: 1970-09-15
Anticipated expiration: 1987-09-15

Description

United States Patent 3,528,915 TITANIFEROUS BIOTITE LUBRICANT Warren L. Taylor, Littleton, Colo., assignor to Titan Products Company, Englewood, Colo., a corporation of Colorado No Drawing. Filed Feb. 28, 1969, Ser. No. 803,414 Int. Cl. C10m /02 U.S. Cl. 25228 1 Claim ABSTRACT OF THE DISCLOSURE Titaniferous biotite ore is ground and classified to remove coarser particles containing materials deleterious to lubricating composition use, the remaining fines providing a useful, novel additive in the manufacture of lubricating compositions.

This invention relates to lubricating compositions, additives therefor, and methods of making the same.

The object of this invention is to provide a simple and economical method for preparing an effective, low-cost, solid, particulate lubricating composition additive from raw titaniferous biotite ore, a relatively rare biotite ore which is unusually rich in titanium and aluminum, and to provide such an additive and composition.

The invention features converting titaniferous biotite ore, having a total silicon, potassium and magnesium content of at least 50% by weight, a total sodium, iron and phosphorous content of at least but less than 50% by Weight, a total manganese, aluminum, strontium, titanium, copper and calcium content of at least 1% but less than 10% by weight, and less than a total 1% by weight of trace elements including nickel, to a lubricating composition additive by grinding the ore and classifying it to retain as said additive selected ranges of predetermined small size depending on the use to be made of the particulate ore composition or of the overall lubricating mixture. In general, the particulate ore composition of the present invention may be used in sizes and amounts comparable to those in which other solid lubricating compo sitions, such as molybdenum disulfide, are used; preferred particle sizes range from about 0.25 to 400 microns, and preferred amounts range from 0.1 to 70% by total weight of lubricating composition. Among the additive uses for which the particulate ore composition of the present invention is particularly effective are: gear and bearing greases (especially, oscillating bearing lubrication), dryfiLm lubrication, for incorporation into plastic parts which require lubrication, and wherever high temperature greases are required; alone, the composition may be used, e.g., as a sealed lubricant for sealed bearings.

Other objects, features and advantages will appear from the following description.

EXAMPLE Titaniferous biotite ore was broken up in a hammermill into chunks of about one-quarter inch size convenient for introduction in the feeding auger of a pulverizer-crusher of the type sold by The Bauer Bros., (30., Springfield, Ohio, under the name Hurricane. One hundred pounds were thus fed, the Hurricane being operated 3,528,915 Patented Sept. 15, 1970 at a rate of 1110 pounds per hour, at 3080 r.p.m., and with an outlet air temperature of 140 F., for a bit more than five minutes. Stack manometer was 3 /2 inches of water vacuum. Of the 100 pounds, 32 pounds were rejected as too coarse, and 68 pounds (including eight pounds from the bag house) of fairly finely ground material recovered.

A fifteen pound lot from the sixty-eight pounds was then fed to a classifier of the type sold by The Bauer Bros. Co. under the name Centri-Sonic, the latter being operated at 3000 rpm. and with its feeder variable drive at 24.0 r.p.m. Feeder spark ration was 18:72, and louver angle 38. The deck selector was at 6 open, the reject air outlet open full, the fan rpm. at 3600, the stack manometer at inches of water vacuum, and the air inlet gates at 2 /2. Accepts from the Centri-Sonic cyclone were 37.4% by weight, and more than 98% of them were through a 325 screen. Only .076% of the particles failed to pass through a Sieve No. 200 screen, of which only 008% failed to pass a No. 100 screen. From the bag house was recovered 11.3% by weight, of particle size even finer than the accepts. The total of 48.7% was found to be of high lubricating quality, being substantially free of such materials present in the ore feed and tending to impair lubricating quality as silicon dioxide and magnetite, removed in grinding and classifying. The particulate material just described, although not expanded or exfoliated, is a highly useful additive, as to greases, in the manufacture of lubricating compositions.

Other embodiments will occur to those skilled in the art and are within the following claim.

What is claimed is:

1. A lubricating additive consisting essentially of finely divided titaniferous biotite substantially free of silicon dioxide, iron oxide, and particles of other materials having properties deleterious to lubricating quality and having a particle size such that substantially all thereof can pass through a 325 screen, said additive having been produced by the process which comprises the steps of grinding titaniferous biotite ore and classifying the ground material to remove a coarser fraction including most of the particles containing materials detrimental to lubricating quality, wherein less than half of the weight of the original ore ends up as the lubricating additive. 45

References Cited UNITED STATES PATENTS DANIEL E. WYMAN, Primary Examiner I. VAUGHN, Assistant Examiner U.S. Cl. X.R.