JPH01234385A - Production of granular rice bran oil cake - Google Patents

Abstract

PURPOSE:To prevent collapse of grains and to easily and inexpensively obtain rice bran oil cake which can be mechanically sprayed and is an org. fertilizer having excellent fertilization efficiency by subjecting the granular matter after rice bran oil is recovered by granulating and drying the rice bran then extracting the oil therefrom to steam pressurization and sizing the same. CONSTITUTION:The rice bran separated and screened the rice fine powder is then put into a steaming machine where steam is blown thereto to adjust, for example, the moisture to about 15% and the temp. to about 90 deg.C; thereafter, the rice bran is pelletized by a screw extruder, etc. The pellets are dried to 4-5% moisture. The pellets are then charged into an extraction vessel where the liquid mixture composed of the solvent obtd. by solvent extraction using hexane, etc., and the rice bran oil is distilled to separate both. The residual solvent in the rice bran is driven out by the steam and is recovered. The granular rice bran is again pressurized for about 6minutes under, for example, about 2kg/cm<2> by steam blowing in the extraction vessel and is then sized and solidified, by which the granular rice bran oil cake free from collapse is obtd.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing granular rice bran oil cake in order to improve the efficiency of fertilizing the rice bran oil meal.

Conventionally, solid fertilizers are made by adding 20% to 45% of high-quality peat to raw material fertilizers such as ammonium sulfate, urea, phosphorus, filtered lime, potassium chloride, or ammonium sulfate, and mixing the mixture in a mold to form a peach kernel shape. There were some that were granulated using a two-dish granulator, etc., but even when pressure molding was attempted using a briquette granulator or a pellet granulator, the yield was very poor, and fermentation waste liquid was used as a molding agent. However, the product immediately after molding had a high moisture content and became soft, which caused it to crumble when transferred to the next drying process, resulting in a low manufacturing yield.

In view of the current situation, the present invention has been developed by molding rice bran into pellets using an extruder or the like and drying them in the pretreatment stage for extracting rice bran oil, which is an organic fertilizer, and applying steam pressure to prevent the pellets from disintegrating after extraction. By applying pressure treatment and then taking it out,
It has been found that the above object can be achieved by granulating the product without adding fermentation waste liquid or the like.

This invention will be explained below based on the manufacturing process.

FIG. 1 is a diagram showing an example of the manufacturing process of the present invention.

First, the rice bran in step 1 is separated by broken rice, and the rice bran with a moisture content of around 12% is placed in the steamer in step 2, and steam is blown into the rice bran, which has a moisture content of 15% and the temperature is 90°C.
Make pellets with a length of 10 degrees and dry them at 130 degrees in a dryer of 4.
Dry at C for 30 to 40 minutes to reduce the moisture content to 4% to 5%, then charge into extraction can 5 and perform solvent extraction.

1. ゛ ゝゝ STATE 1 NOTICE ・Kouo: Hexane is used as the solvent, and the mixture of solvent and oil is extracted with pump 6 and distilled to separate it into rice bran oil and the solvent. The solvent remaining in the rice bran is removed by steam and recovered, completing the extraction operation.

Next, in order to solidify the rice bran granules, steam is again blown into the extraction can 5 and pressurized at a pressure of 2 kg/ci for 6 minutes, and then taken out.
to separate granules and powder.

(2/3 becomes granular) The powder is sucked into a tank by a fan 9.

The separated granules were sieved with 10 sieves to a particle size of 3 mm to 5 mm.
The grains are sized and cooled in a cooler 11 to produce 12 "granular rice bran oil cakes".

As shown in Table 1, rice bran granular fertilizer has a high phosphoric acid content, so there is little reaction with aluminum and iron in the soil, and even during fertilization, it is washed away by rainwater. There is little loss and the fertilizer can be applied without scattering even on windy days, resulting in high work efficiency.Also, since it can be applied mechanically, the cost of products can be reduced, and demand for organic fertilizers is expected to increase. The component amounts are shown in Table 1.

Also, because the granules have countless pores, they absorb moisture well after fertilization and have the effect of accelerating the decomposition of ingredients.

Furthermore, in the present invention, the filtration rate is fast and the consumption of steam pressure is low during extraction, and mass production is possible at a low rate.

1 1゛? J'- Patent Applicant Representative Director Akira Utsumoto Procedural Amendment (Method) % Formula % 1. Hanyu's Indication 1986 Patent Application No. 5
No. 9863 No. 2, Title of the invention: Method for producing granular rice bran oil cake 3, Relationship with the person making the amendment: Hanyu Patent applicant address: 998

Claims (1)

[Claims] A method for producing granular rice bran oil cake, which is characterized in that in the pre-treatment stage for extracting rice bran oil, rice bran is granulated and dried, and after extraction, the granules are sized by pressurizing steam to prevent the granules from collapsing.