**Table 6.**

*Fillers - Synthesis, Characterization and Industrial Application*

**Vdaf, %**

**Vdaf, %**

of the sintering ability of the pitch and filler activity. It seems that this definition of the term "sintered ability" has a definite physical content, in contrast to that adopted in coal chemistry: the sintered ability—the property to bake one or another

> x1 x2

<sup>3</sup> − *x*<sup>1</sup> 3

Since we have a parabolic plot (**Figure 4**), the work of destruction (W, c.u.) will

**Viscosity, η140 P**а**\***<sup>с</sup> **Wetting power by** 

**Viscosity, η140 P**а**\***<sup>с</sup> **Wetting power by** 

 85 53 2.89 0.8 y = 206.8–11.6x 87 53 3.97 0.785 y = 207.8–9.8x 86 53 3.96 0.86 y = 263.0–21.7x 86 53.8 3.29 0.94 y = 263.0–21.6x 86.5 53.7 3.88 0.9 y = 150.3–8.6x 86 54.5 3.59 1.0 y = 345.8–31.3x 86 54.5 3.42 0.85 y = 275.2–21.3x

 72 58.1 1.51 1.47 y = 78.2–3.4x 72 58 1.48 1.43 y = 132.7–5.8x 72 58.1 1.37 1.48 y = 146.9–6.9x 72 57 1.37 1.37 y = 192.6–10.3x 72 57.7 1.42 1.55 y = 83.8–3.8x 72 57.5 1.58 1.28 y = 115.8–6.9x

**[16], m**

**[16], m**

**Equation**

**Equation**

Eq. (7), after simple transformations, gives a formula for calculating the work of

<sup>2</sup> − *x*<sup>1</sup> 2

) + *<sup>b</sup>*⁄2(*x*<sup>2</sup>

The coordinates of the maximum of the parabola with respect to Eq. (8) were

The results of calculations of the destruction of pitch composites with different

As follows from data of **Table 6** and diagrams of **Figure 7**, the greatest sintering ability of the studied pitch is in relation to anthracite, and the smallest—in relation to sand and glass. That is, adhesive interaction is the most potent in a pair of pitchanthracite. Anthracite is the most active filler. In this regard, anthracite is the reference filler for assessing the sintering ability of coal, as it is customary in the Roga test [33].

(*ax*<sup>2</sup> + *bx* + *c*)*dx* (7)

) + *c*(*x*<sup>2</sup> − *x*1) (8)

**28**

amount of inert material [32].

*Results of monitoring quality for pitch V.*

**Table 5.**

**Table 4.**

**№ Softening point. °**С

*Results of monitoring quality for pitch B1.*

**№ Softening point. °**С

be equal to the area under the parabola:

*W* = ∫

the destruction of pitch composites:

*W* = *<sup>a</sup>*⁄3(*x*<sup>2</sup>

fillers are given in **Table 6**.

constructed using the well-known equations.

*The work of the pitch composite destruction for various fillers.*

**Figure 7.**

*The fillers activity by destruction work of pitch composite.*
