CN2164555Y

CN2164555Y - Direct measurer for micro-quantity mine density

Info

Publication number: CN2164555Y
Application number: CN 93216720
Authority: CN
Inventors: 张伯雁
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-06-26
Filing date: 1993-06-26
Publication date: 1994-05-11
Anticipated expiration: 2003-06-26

Abstract

The utility model relates to a direct measurer for micro-quantity mine density, which belongs to the measuring device of the material density. The weighing end of the analytical balance is matched with a closed-type weighing device and a glass container with a hole; an adding sample makes a penetration container which passes through the hole inserted into an adding sample ladle; the container is provided with a sealing cover; the hang spring of the weighing pan which is hung in the container passes through a small hole on the cover and is hung on the regulating hook of the balance, and the hang spring of the weighing pan extends to the measuring device of the density composed of an adding sample fork in the balance through the small hole on the double-door. The direct measurer for micro-quantity mine density which has the advantages of high precision, less sample consumption, simple structure, and easy operation can not only be used for all kinds of minerals, such as jade, but also can be used for the identification and the research of the purity of the ornamental articles, such as pure gold, etc.

Description

Direct measurer for micro-quantity mine density

The utility model belongs to the determinator of material density.

Density is an important physical parameter of mineral research, when carrying out density measurement, especially to many rare mineral, is difficult to find enough quantity, to satisfy the conventional determining needs.For a long time, the experts and scholars of China and foreign countries have explored many trace quantity mineral density inspect methods, as hydrostatics weight method, pycnometer method, micro-hydrometer method, heavy-fluid suspension method etc., but these methods all have limitation, when special sample ore is measured below 0.1g, precision obviously descends, even can't measure, what have can not measure greater than the mineral more than 3.3 big metric density as the heavy-fluid method, perhaps tested mineral is had corrosive attack or the like.To trace quantity mineral density measurement technology, still be problem anxious to be solved in a word.When density is directly measured, use conventional analytical balance weighing, when sample ore is trace, to temperature, and the liquid brightness environmental factor such as to send out very responsive, be difficult to control during operation, can not guarantee the repetition and the repeatability of measurement result, so the weighing precision of trace quantity mineral (several milligrams are following), particularly liquid is called scale existing quality, gordian technique especially in the following text.

The purpose of this utility model provides and a kind ofly can reduce or avoid environment in the weighing process to measuring the direct analyzer of closed trace quantity mineral density of influence.

Main points of the present utility model are to be furnished with analytical balance, at the end of weighing of balance, be furnished with closed meausring apparatus, this meausring apparatus has narrow meshed glass container, T type application of sample is penetrating through this hole and the application of sample spoon is pegged graft, between application of sample handle and the glass container and leak-proof device arranged; Open the gland bonnet of aperture in the middle of being added with on the glass container, hang spring system be hung in the glass container pan of a steelyard by this aperture with the hook lodge of hang spring upper end on the screwed adjustable hook on the analytical balance; The application of sample fork of band fork and turning handle extend into the fork end in the balance by the aperture on constant temperature cover and the balance side door, has formed density measuring device.

Fig. 1 is the direct analyzer structural representation of trace quantity mineral density.

Among the figure 1---glass container, 2---aperture, 3---T type application of sample handle, 4---the application of sample spoon, 5---gland bonnet, 6---hang spring, 7---pan of a steelyard, 8---hook, 9---adjustable hook, 10---the application of sample fork, 11---the constant temperature cover, 12---the balance side door, 13,15---aperture, 14---sealing shroud.

Contrast drawings and Examples below, the utility model is described in further detail.The supporting balance of present embodiment is 100,000/analytical balance.As seen from the figure, the end of weighing at balance, is furnished with closed meausring apparatus, have the glass container 1 that φ 3 apertures 2 are made by φ 70 * 80mm and at 35mm place, distance bottom, T type application of sample penetrates container to 3 and pegs graft with application of sample spoon 4 through this hole, the leak-proof device that has sealing shroud 14 to constitute between application of sample handle and the glass container makes application of sample handle and application of sample spoon unlikely seepage of liquid in the container when rotating; On glass container, have the gland bonnet 5 of φ 1 aperture in the middle of being added with, the hang spring 6 that the nylon wire of diameter 0.1mm makes is to be hung in the glass container by the pan of a steelyard 7 that the aperture that covers makes φ 30 glass dishes, and with hook 8 lodges of hang spring upper end on the adjustable hook on the balance 9, adjustable hook has the position of screw thread scalable pan of a steelyard; Application of sample fork 10 has shift fork and turning handle, and is little by 15 by opening on constant temperature cover 11 and the balance side door 12,13 shift fork extend in the balance, formed density meter appearance quality determinator.

When measuring density with it, at first accurately measure the quality of tested mineral dry sample with analytical balance, then the analytical balance weighing pan is taken off, change closed meausring apparatus provided by the utility model, and the sample ore that will take by weighing the dry sample quality places the application of sample spoon, the medium (generally adopting ethanol) with known density adds in the glass container 1 again, surpass the about 20mm of application of sample spoon place to liquid level, build gland bonnet 5, can take by weighing the apparent mass of sample ore, be i.e. weighing in the liquid.Turn adjustable hook 9, adjust the position of pan of a steelyard 7, shut two-door, after treating that atmosphere is stablized in the balance, adjust zero point, application of sample spoon 4 upset sample ores are put on the pan of a steelyard 7 with the fork of the application of sample outside the hand operation cover in the situation of not opening day jib door then, measured the apparent mass of sample ore more exactly, and keep the liquid temperature (accurately to ± 0.2 ℃) in the device in mind.Can calculate sample ore density according to Ou Ji Mead law.

The direct analyzer of trace quantity mineral density can be measured the mineral density of sample ore under the environment of sealing, and determination data is accurate, and the precision height is accurate to behind the decimal two.And existing method sample needs tens of even hundreds of milligrams, its precision can only reach behind the decimal one.The utility model sample dosage is few, can carry out micro-sample ore and measure, measured object general only need 1 or several particulate (3～5mg).Testee density range of the present utility model is not in addition limit, the testee crystalline form is not limit, tested sample ore is not had corrosion.The utility model is simple in structure, and processing ease is cheap, has solved the long-term gordian technique that needs solution.

The direct analyzer of trace quantity mineral density not only can be used for research, the evaluation of various mineral, rare mineral, gem and jade etc., also can be used for measuring simultaneously the purity of ornaments such as proof gold, is urgtented need equipment means of great practical value in the research and production.

Claims

1, the direct analyzer of trace quantity mineral density, is furnished with analytical balance, it is characterized in that, the end of weighing at balance is furnished with closed meausring apparatus, this meausring apparatus has the glass container [1] that has aperture [2], [3] are penetrated container to T type application of sample through this hole and application of sample spoon [4] is pegged graft, be provided with the sealing shroud [14] of leak-proof device between application of sample handle and the container, open the gland bonnet [5] of aperture in the middle of being added with on the glass container, with hang spring [6] be play in the glass container pan of a steelyard [7] by this aperture with hook [8] lodge of hang spring upper end on the threaded adjustable hook [9] on the analytical balance; The application of sample fork [10] of band shift fork and turning handle, aperture [15], [13] by constant temperature cover [11] and balance side door [12] extend in the balance density measuring device of being formed.