CN2319405Y

CN2319405Y - Composite shale wax powder pressured blocks

Info

Publication number: CN2319405Y
Application number: CN 98201079
Authority: CN
Inventors: 李学增
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-02-16
Filing date: 1998-02-16
Publication date: 1999-05-19
Anticipated expiration: 2008-02-16

Abstract

The utility model relates to a composite shale wax powder pressured block which is provided with a body (4) made of shale wax, the body is provided with a cavity (5), the top and the bottom of the cavity is provided with through holes (1) of a current conducting polar. The utility model is characterized in that a lining (3) made from dolomite materials is arranged in the inner wall of the mold cavity, so the mold cavity becomes big for a little amount with the phase change and the shrinkage of shale wax materials because of high temperature; besides, the utility model has a little heat transmission coefficient which can increase the pressure and temperature of the inner mold cavity, improve the pressure transmission performance, save energies and improve the quality.

Description

Compound fissile-wax stone briquetting

The utility model relates to chemistry or physical method, for example: katalysis, colloid chemistry; Its relevant devices.Be particularly related to and utilize the method that barometric point makes material generation chemistry or physical change that is below or above, and relevant devices.

The fissile-wax stone briquetting be static must use when producing man-made diamond with the overflow mould of fissile-wax stone as transmission medium, briquetting has a die cavity, the die cavity two ends are porose, the built-in conducting electrode in hole.The built-in charcoal of die cavity (graphite) sheet and catalyst during work make in the die cavity by electrode pair die cavity energising and to heat, and to six pressurizations of briquetting, pressure can reach in the die cavity, and under the High Temperature High Pressure effect, carbon plate can change into diamond.

Though fissile-wax stone is more satisfactory as transmission medium, when High Temperature High Pressure, still have some character not meet the demands, this is unfavorable for growth of diamond, for example:

1, fissile-wax stone can produce phase transformation (particularly the fissile-wax stone temperature around the die cavity is the highest) and mineral density is increased under the high temperature of diamond synthesis, volumetric shrinkage, thereby cause die cavity to increase, internal pressure descends.Simultaneously, after the phase transformation, frictional coefficient and intensity all increase and are rigidity, influence the pressure transmission effect under the High Temperature High Pressure, cause pressure gradient bigger in the die cavity and influence the generation of gem-quality crystal.

2, at high temperature, the crystal water of fissile-wax stone can be separated, and may resolve into hydrogen and oxygen or hydroxide radical, and these resolvents transform very harmful to graphite to diamond.

Have now found that another kind of transmission medium, be rhombspar, it does not at high temperature have the reversible phase transformation, and its coefficient of expansion big than fissile-wax stone, be three times of fissile-wax stone, at high temperature, fissile-wax stone produces phase transformation and volumetric shrinkage, and the coefficient of expansion descends, and the rhombspar coefficient of expansion is constant, then the difference of both coefficients of expansion at high temperature is just very big, and the heat-conduction coefficient of rhombspar also is lower than fissile-wax stone, therefore helps the raising of temperature in the die cavity.

But rhombspar can scatter under High Temperature High Pressure when being used for diamond synthesizing process, can not finish the pressure transmission task, so can not make overflow mould separately, therefore is blended in the fissile-wax stone more and uses, and effect is bad.

The purpose of this utility model provides that a kind of die cavity expanded by heating rate is little, and heat-conduction coefficient is little, thereby the compound fissile-wax stone briquetting that die cavity temperature, pressure are improved.

The purpose of this utility model realizes by following technical scheme, compound alabaster briquetting has the body of fissile-wax stone system, have die cavity in the body, the die cavity upper and lower end respectively has the through hole that matches with conducting electrode, it is characterized in that mould intracavity wall has the lining of being made by the rhombspar material.

Fissile-wax stone briquetting of the present utility model, owing to have the lining that the rhombspar material is made at mould intracavity wall, the high temperature that is produced in the die cavity is at first passed to rhombspar, just reach on the fissile-wax stone then, the temperature that fissile-wax stone is born is lower, phase transformation reduces, do not produce phase transformation because of rhombspar simultaneously, the coefficient of expansion is constant, when fissile-wax stone increases the die cavity diameter because of the phase transformation volumetric shrinkage, the expansion of rhombspar can be offset the increase of the die cavity that produces because of the fissile-wax stone phase transformation, die cavity is not increased or reduces greatly, thereby total expanded by heating rate reduces, and offset that its die cavity diameter increases and the influence that causes pressure to reduce, simultaneously because the heat-conduction coefficient of rhombspar is little, thereby thermosteresis is little, but so can improve pressure and temperature in the die cavity conserve energy and time.

Below in conjunction with drawings and Examples compound fissile-wax stone briquetting of the present utility model is explained in detail.

Fig. 1 is the sectional view of first kind of embodiment of the compound fissile-wax stone briquetting of the utility model;

Fig. 2 is the sectional view of the compound fissile-wax stone briquetting of the utility model along A-A face among Fig. 1;

Fig. 3 is the sectional view of second kind of embodiment of the compound fissile-wax stone briquetting of the utility model;

Fig. 4 is the sectional view of the compound fissile-wax stone briquetting of the utility model along B-B face among Fig. 3.

As Fig. 1 Fig. 2, the body 4 that this compound fissile-wax stone briquetting has a foursquare fissile-wax stone system, there is a die cavity 5 centre of body, on the die cavity, the lower end respectively has the less through hole 1 that can cooperate with conducting electrode, mould intracavity wall has the lining made from rhombspar 3, on body 4, have the hole 2 that holds lining 3, the upper end in hole 2 and hole 2 are isometrical so that molding and put into lining 3, the length of lining 3 is less than the length in hole 2, on lining 3 tops, body 4 is built-in with not 6, porose 1 hole that cooperates with conducting electrode 1 that forms briquetting die cavity top, 6 centers of encircling, and the body 4 of the fissile-wax stone system of present embodiment and lining 3 all can give first compression moulding separately, then lining 3 is packed in the hole 2 of body 4, be body 4 with to overlapping 3 for removably connecting, for example be the running fit connection, put into again and encircle 6 and can form complete briquetting.

Fig. 3 Fig. 4 shows another kind of embodiment, the lining of the briquetting of this embodiment extrudes earlier, compressed together with the body of fissile-wax stone system then, all-in-one-piece is non-removable fixedlys connected in order to suppress with lining 3 to make body 4, on the body 4 of the upper end of lining 3, can extrude rib 9, being equipped with ring 6 in the hole of rib 9, matches with conducting electrode in the hole 1 of ring 6.

Compound fissile-wax stone briquetting of the present utility model, six faces of body 4 can be the plane, as shown in Figure 1, 2, also can have the concave station 8 that matches with top hammer tip portion, shown in Fig. 3,4, the bed-plate dimension of concave station equates that with the face size of top hammer the side has with the top hammers four gradients that the side is same into shape, and the upper and lower faces that can also be body 4 is the plane or has more shallow concave station 8 and four sides have concave station 8.

The hole 1 of said placement conducting electrode, can be through hole (as shown in Figure 1), place isometrical conducting electrode, also can be in the hole 1 the outside have the diameter step 7 (as shown in Figure 3) big than hole 1, being placed with the conducting electrode of step, thereby increase top hammer and conduction interpolar conductive area.

Compound fissile-wax stone briquetting of the present utility model, the lining of dolomite made is housed in die cavity, make die cavity when work high temperature lower mode cavity diameter increase reduce, thereby the pressure-losses reduces, simultaneously because the rhombspar heat-conduction coefficient is little, thermosteresis is little in the die cavity, so die cavity internal pressure, temperature all improve relatively, and can improve the pressure transmission performance of transmission medium under the high temperature, save the energy and time, improved the quality and the output of man-made diamond.

Claims

1, a kind of compound fissile-wax stone briquetting, body (4) with fissile-wax stone system, have die cavity (5) in the body, the die cavity upper and lower end respectively has the through hole (1) that matches with conducting electrode, it is characterized in that die cavity (5) inwall has the lining (3) by rhombspar material system.

2, compound fissile-wax stone briquetting as claimed in claim 1 is characterized in that said body (4) and said lining (3) are for removably connecting.

3, compound fissile-wax stone briquetting as claimed in claim 1 is characterized in that said body (4) is non-removable fixedlying connected with said lining (3).

4, as claim 1 or 2 or 3 described compound fissile-wax stone briquettings, it is characterized in that six faces of body (4) are the plane.

5,, it is characterized in that six masks of body (4) have the concave station (8) that matches with top hammer tip portion as claim 1 or 2 or 3 described compound fissile-wax stone briquettings.

6, as claim 1 or 2 or 3 described compound fissile-wax stone briquettings, the upper and lower faces that it is characterized in that body (4) is the plane, and four sides have the concave station (8) that matches with top hammer tip portion.

7,, it is characterized in that the outside in the said hole that cooperates with conducting electrode (1) has the diameter step (7) big than hole (1) as claim 1 or 2 or 3 described compound fissile-wax stone briquettings.

8, compound fissile-wax stone briquetting as claimed in claim 4 is characterized in that the outside in the said hole that cooperates with conducting electrode (1) has the diameter step (7) big than hole (1).

9, compound page or leaf wax briquetting as claimed in claim 5 is characterized in that the outside in the said hole that cooperates with conducting electrode (1) has the diameter step (7) big than hole (1).

10, compound fissile-wax stone briquetting as claimed in claim 6, the outside tool diameter that it is characterized in that the said hole that cooperates with conducting electrode (1) than hole (1) big step (7) arranged.